./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 54a68f41 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 0.2.1-54a68f4 [2020-12-03 17:00:32,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 17:00:32,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 17:00:33,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 17:00:33,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 17:00:33,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 17:00:33,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 17:00:33,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 17:00:33,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 17:00:33,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 17:00:33,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 17:00:33,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 17:00:33,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 17:00:33,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 17:00:33,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 17:00:33,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 17:00:33,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 17:00:33,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 17:00:33,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 17:00:33,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 17:00:33,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 17:00:33,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 17:00:33,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 17:00:33,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 17:00:33,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 17:00:33,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 17:00:33,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 17:00:33,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 17:00:33,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 17:00:33,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 17:00:33,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 17:00:33,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 17:00:33,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 17:00:33,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 17:00:33,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 17:00:33,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 17:00:33,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 17:00:33,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 17:00:33,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 17:00:33,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 17:00:33,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 17:00:33,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-12-03 17:00:33,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 17:00:33,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 17:00:33,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 17:00:33,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 17:00:33,124 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 17:00:33,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 17:00:33,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 17:00:33,125 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 17:00:33,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 17:00:33,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 17:00:33,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 17:00:33,126 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-03 17:00:33,126 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-03 17:00:33,126 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-03 17:00:33,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 17:00:33,127 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 17:00:33,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 17:00:33,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 17:00:33,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 17:00:33,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 17:00:33,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 17:00:33,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:00:33,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 17:00:33,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 17:00:33,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-03 17:00:33,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 17:00:33,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 17:00:33,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-03 17:00:33,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 17:00:33,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 17:00:33,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 17:00:33,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 17:00:33,528 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 17:00:33,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-03 17:00:33,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288f08a5f/80d90927d04043f3a7520b7b8d6f89d0/FLAG1844fcd48 [2020-12-03 17:00:34,186 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 17:00:34,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-03 17:00:34,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288f08a5f/80d90927d04043f3a7520b7b8d6f89d0/FLAG1844fcd48 [2020-12-03 17:00:34,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288f08a5f/80d90927d04043f3a7520b7b8d6f89d0 [2020-12-03 17:00:34,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 17:00:34,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-03 17:00:34,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 17:00:34,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 17:00:34,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 17:00:34,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:34" (1/1) ... [2020-12-03 17:00:34,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7dd75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:34, skipping insertion in model container [2020-12-03 17:00:34,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:34" (1/1) ... [2020-12-03 17:00:34,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 17:00:34,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:00:34,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:00:34,794 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) [2020-12-03 17:00:34,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5301ede8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:34, skipping insertion in model container [2020-12-03 17:00:34,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 17:00:34,796 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-12-03 17:00:34,799 INFO L168 Benchmark]: Toolchain (without parser) took 242.26 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.2 MB in the beginning and 35.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:34,800 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 46.1 MB. Free memory is still 31.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:00:34,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.82 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 21.9 MB in the beginning and 35.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:34,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 46.1 MB. Free memory is still 31.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.82 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 21.9 MB in the beginning and 35.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 3.5 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 0.2.1-54a68f4 [2020-12-03 17:00:37,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 17:00:37,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 17:00:37,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 17:00:37,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 17:00:37,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 17:00:37,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 17:00:37,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 17:00:37,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 17:00:37,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 17:00:37,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 17:00:37,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 17:00:37,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 17:00:37,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 17:00:37,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 17:00:37,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 17:00:37,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 17:00:37,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 17:00:37,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 17:00:37,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 17:00:37,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 17:00:37,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 17:00:37,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 17:00:37,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 17:00:37,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 17:00:37,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 17:00:37,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 17:00:37,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 17:00:37,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 17:00:37,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 17:00:37,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 17:00:37,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 17:00:37,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 17:00:37,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 17:00:37,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 17:00:37,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 17:00:37,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 17:00:37,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 17:00:37,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 17:00:37,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 17:00:37,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 17:00:37,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-12-03 17:00:37,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 17:00:37,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 17:00:37,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 17:00:37,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 17:00:37,315 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 17:00:37,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 17:00:37,316 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 17:00:37,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 17:00:37,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 17:00:37,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 17:00:37,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 17:00:37,318 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-03 17:00:37,318 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-03 17:00:37,319 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-03 17:00:37,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 17:00:37,319 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 17:00:37,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 17:00:37,320 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 17:00:37,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 17:00:37,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 17:00:37,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 17:00:37,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 17:00:37,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 17:00:37,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:00:37,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 17:00:37,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 17:00:37,322 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-03 17:00:37,322 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 17:00:37,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 17:00:37,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 17:00:37,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-03 17:00:37,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 17:00:37,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 17:00:37,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 17:00:37,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 17:00:37,780 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 17:00:37,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-03 17:00:37,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d293c87f/4b3d010238454ff0857542c753e6b0d0/FLAG4c79df3dd [2020-12-03 17:00:38,445 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 17:00:38,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-03 17:00:38,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d293c87f/4b3d010238454ff0857542c753e6b0d0/FLAG4c79df3dd [2020-12-03 17:00:38,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d293c87f/4b3d010238454ff0857542c753e6b0d0 [2020-12-03 17:00:38,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 17:00:38,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-03 17:00:38,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 17:00:38,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 17:00:38,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 17:00:38,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:38" (1/1) ... [2020-12-03 17:00:38,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385c34a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:38, skipping insertion in model container [2020-12-03 17:00:38,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:00:38" (1/1) ... [2020-12-03 17:00:38,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 17:00:38,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:00:39,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:00:39,031 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-03 17:00:39,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:00:39,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:00:39,050 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 17:00:39,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:00:39,091 INFO L208 MainTranslator]: Completed translation [2020-12-03 17:00:39,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39 WrapperNode [2020-12-03 17:00:39,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 17:00:39,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 17:00:39,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 17:00:39,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 17:00:39,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (1/1) ... [2020-12-03 17:00:39,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 17:00:39,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 17:00:39,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 17:00:39,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 17:00:39,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (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 [2020-12-03 17:00:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-03 17:00:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 17:00:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2020-12-03 17:00:39,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-03 17:00:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-03 17:00:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 17:00:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-12-03 17:00:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-03 17:00:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-03 17:00:39,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 17:00:39,480 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2020-12-03 17:00:39,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:39 BoogieIcfgContainer [2020-12-03 17:00:39,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 17:00:39,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 17:00:39,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 17:00:39,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 17:00:39,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:00:38" (1/3) ... [2020-12-03 17:00:39,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d28a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:00:39, skipping insertion in model container [2020-12-03 17:00:39,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:00:39" (2/3) ... [2020-12-03 17:00:39,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d28a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:00:39, skipping insertion in model container [2020-12-03 17:00:39,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:39" (3/3) ... [2020-12-03 17:00:39,491 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-12-03 17:00:39,506 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 17:00:39,510 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-03 17:00:39,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-03 17:00:39,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 17:00:39,547 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-03 17:00:39,548 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 17:00:39,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 17:00:39,548 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 17:00:39,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 17:00:39,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 17:00:39,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 17:00:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-03 17:00:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 17:00:39,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:00:39,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 17:00:39,574 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-03 17:00:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:00:39,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2020-12-03 17:00:39,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:00:39,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598097308] [2020-12-03 17:00:39,618 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 [2020-12-03 17:00:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:00:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 17:00:39,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 17:00:39,844 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 [2020-12-03 17:00:39,846 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 17:00:39,854 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 17:00:39,855 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-03 17:00:39,855 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-03 17:00:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:00:39,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 17:00:39,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598097308] [2020-12-03 17:00:39,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 17:00:39,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 17:00:39,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494483851] [2020-12-03 17:00:39,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 17:00:39,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-03 17:00:39,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 17:00:39,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 17:00:39,921 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-12-03 17:00:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:00:40,013 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-03 17:00:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 17:00:40,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 17:00:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:00:40,024 INFO L225 Difference]: With dead ends: 21 [2020-12-03 17:00:40,024 INFO L226 Difference]: Without dead ends: 18 [2020-12-03 17:00:40,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 17:00:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-03 17:00:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-03 17:00:40,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-03 17:00:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-03 17:00:40,069 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-12-03 17:00:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:00:40,070 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-03 17:00:40,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 17:00:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-03 17:00:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 17:00:40,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:00:40,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 17:00:40,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 17:00:40,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-03 17:00:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:00:40,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2020-12-03 17:00:40,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:00:40,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221509166] [2020-12-03 17:00:40,288 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 [2020-12-03 17:00:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:00:40,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 17:00:40,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 17:00:40,351 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 [2020-12-03 17:00:40,352 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 17:00:40,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 17:00:40,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-03 17:00:40,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-03 17:00:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:00:40,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 17:00:40,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221509166] [2020-12-03 17:00:40,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 17:00:40,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 17:00:40,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775198255] [2020-12-03 17:00:40,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 17:00:40,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-03 17:00:40,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 17:00:40,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 17:00:40,416 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-12-03 17:00:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:00:40,501 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-03 17:00:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 17:00:40,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 17:00:40,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:00:40,505 INFO L225 Difference]: With dead ends: 23 [2020-12-03 17:00:40,505 INFO L226 Difference]: Without dead ends: 23 [2020-12-03 17:00:40,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-03 17:00:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-03 17:00:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-03 17:00:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-03 17:00:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-03 17:00:40,511 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-12-03 17:00:40,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:00:40,512 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-03 17:00:40,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 17:00:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-03 17:00:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-03 17:00:40,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:00:40,513 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 17:00:40,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-03 17:00:40,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-03 17:00:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:00:40,728 INFO L82 PathProgramCache]: Analyzing trace with hash -6453934, now seen corresponding path program 1 times [2020-12-03 17:00:40,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:00:40,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913654021] [2020-12-03 17:00:40,729 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 [2020-12-03 17:00:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:00:40,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-03 17:00:40,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 17:00:40,802 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 [2020-12-03 17:00:40,804 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-03 17:00:40,809 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-03 17:00:40,812 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-03 17:00:40,812 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-03 17:00:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:00:40,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 17:00:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:00:41,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913654021] [2020-12-03 17:00:41,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-03 17:00:41,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-12-03 17:00:41,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057863951] [2020-12-03 17:00:41,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-03 17:00:41,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-03 17:00:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-03 17:00:41,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-03 17:00:41,285 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-12-03 17:00:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:00:41,662 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-12-03 17:00:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 17:00:41,664 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-12-03 17:00:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:00:41,665 INFO L225 Difference]: With dead ends: 30 [2020-12-03 17:00:41,666 INFO L226 Difference]: Without dead ends: 30 [2020-12-03 17:00:41,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-03 17:00:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-03 17:00:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2020-12-03 17:00:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-03 17:00:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-03 17:00:41,672 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 13 [2020-12-03 17:00:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:00:41,672 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-03 17:00:41,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-03 17:00:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-03 17:00:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 17:00:41,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:00:41,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 17:00:41,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-03 17:00:41,885 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-03 17:00:41,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:00:41,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2020-12-03 17:00:41,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:00:41,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604843527] [2020-12-03 17:00:41,889 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 [2020-12-03 17:00:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:00:41,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-03 17:00:41,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 17:00:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:00:42,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 17:00:42,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604843527] [2020-12-03 17:00:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 17:00:42,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-03 17:00:42,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309486544] [2020-12-03 17:00:42,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 17:00:42,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-03 17:00:42,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 17:00:42,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-03 17:00:42,116 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2020-12-03 17:00:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:00:42,235 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-03 17:00:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 17:00:42,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-03 17:00:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:00:42,236 INFO L225 Difference]: With dead ends: 25 [2020-12-03 17:00:42,236 INFO L226 Difference]: Without dead ends: 23 [2020-12-03 17:00:42,237 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-03 17:00:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-03 17:00:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-03 17:00:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-03 17:00:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-03 17:00:42,241 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-12-03 17:00:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:00:42,241 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-03 17:00:42,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 17:00:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-03 17:00:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 17:00:42,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:00:42,242 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 17:00:42,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-03 17:00:42,443 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-03 17:00:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:00:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 2 times [2020-12-03 17:00:42,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:00:42,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668031326] [2020-12-03 17:00:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-03 17:00:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:00:42,504 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:00:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:00:42,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:00:42,563 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-03 17:00:42,563 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 17:00:42,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-03 17:00:42,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:00:42 BoogieIcfgContainer [2020-12-03 17:00:42,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 17:00:42,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 17:00:42,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 17:00:42,797 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 17:00:42,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:00:39" (3/4) ... [2020-12-03 17:00:42,800 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 17:00:42,843 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-03 17:00:42,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 17:00:42,845 INFO L168 Benchmark]: Toolchain (without parser) took 4032.36 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.1 MB in the beginning and 33.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:42,845 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory is still 18.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:00:42,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.69 ms. Allocated memory is still 52.4 MB. Free memory was 29.9 MB in the beginning and 32.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:42,847 INFO L168 Benchmark]: Boogie Preprocessor took 39.84 ms. Allocated memory is still 52.4 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:42,847 INFO L168 Benchmark]: RCFGBuilder took 348.41 ms. Allocated memory is still 52.4 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 42.8 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:42,848 INFO L168 Benchmark]: TraceAbstraction took 3312.78 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 34.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:42,849 INFO L168 Benchmark]: Witness Printer took 46.43 ms. Allocated memory is still 62.9 MB. Free memory was 34.7 MB in the beginning and 33.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:00:42,853 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 37.7 MB. Free memory is still 18.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.69 ms. Allocated memory is still 52.4 MB. Free memory was 29.9 MB in the beginning and 32.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.84 ms. Allocated memory is still 52.4 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 348.41 ms. Allocated memory is still 52.4 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 42.8 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3312.78 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 34.7 MB in the end (delta: -4.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 46.43 ms. Allocated memory is still 62.9 MB. Free memory was 34.7 MB in the beginning and 33.1 MB in the end (delta: 1.6 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: 3.2s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 63 SDslu, 145 SDs, 0 SdLazy, 148 SolverSat, 15 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, 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, 4 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 6 QuantifiedInterpolants, 6222 SizeOfPredicates, 12 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/4 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...