./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer --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=/tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer --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 0.2.0-69874e2 [2020-12-01 15:56:51,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:56:51,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:56:51,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:56:51,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:56:51,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:56:51,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:56:51,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:56:51,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:56:51,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:56:51,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:56:51,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:56:51,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:56:51,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:56:51,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:56:51,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:56:51,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:56:51,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:56:51,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:56:51,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:56:51,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:56:51,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:56:51,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:56:51,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:56:51,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:56:51,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:56:51,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:56:51,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:56:51,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:56:51,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:56:51,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:56:51,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:56:51,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:56:51,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:56:51,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:56:51,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:56:51,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:56:51,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:56:51,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:56:51,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:56:51,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:56:51,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-12-01 15:56:51,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:56:51,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:56:51,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:56:51,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:56:51,961 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:56:51,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:56:51,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:56:51,962 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:56:51,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:56:51,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:56:51,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:56:51,963 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 15:56:51,963 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 15:56:51,963 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 15:56:51,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:56:51,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 15:56:51,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:56:51,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:56:51,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:56:51,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:56:51,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:56:51,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:56:51,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:56:51,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:56:51,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:56:51,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:56:51,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:56:51,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:56:51,967 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:/tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-01 15:56:52,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:56:52,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:56:52,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:56:52,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:56:52,341 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:56:52,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 15:56:52,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/56ef92f95/1db53758d53d4775bfa0a97358d837a0/FLAGd889c1f33 [2020-12-01 15:56:52,928 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:56:52,929 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 15:56:52,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/56ef92f95/1db53758d53d4775bfa0a97358d837a0/FLAGd889c1f33 [2020-12-01 15:56:53,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/56ef92f95/1db53758d53d4775bfa0a97358d837a0 [2020-12-01 15:56:53,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:56:53,290 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 15:56:53,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:53,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:56:53,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:56:53,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:53" (1/1) ... [2020-12-01 15:56:53,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c343a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:53, skipping insertion in model container [2020-12-01 15:56:53,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:53" (1/1) ... [2020-12-01 15:56:53,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:56:53,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:56:53,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:53,556 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 15:56:53,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c22f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:53, skipping insertion in model container [2020-12-01 15:56:53,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:53,558 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-12-01 15:56:53,560 INFO L168 Benchmark]: Toolchain (without parser) took 269.20 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 61.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:53,562 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 81.8 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 36.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:53,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.54 ms. Allocated memory is still 81.8 MB. Free memory was 51.6 MB in the beginning and 61.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:53,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 81.8 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 36.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.54 ms. Allocated memory is still 81.8 MB. Free memory was 51.6 MB in the beginning and 61.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 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 0.2.0-69874e2 [2020-12-01 15:56:56,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:56:56,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:56:56,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:56:56,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:56:56,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:56:56,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:56:56,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:56:56,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:56:56,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:56:56,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:56:56,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:56:56,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:56:56,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:56:56,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:56:56,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:56:56,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:56:56,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:56:56,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:56:56,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:56:56,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:56:56,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:56:56,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:56:56,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:56:56,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:56:56,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:56:56,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:56:56,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:56:56,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:56:56,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:56:56,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:56:56,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:56:56,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:56:56,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:56:56,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:56:56,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:56:56,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:56:56,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:56:56,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:56:56,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:56:56,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:56:56,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-12-01 15:56:56,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:56:56,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:56:56,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:56:56,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:56:56,462 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:56:56,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:56:56,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:56:56,462 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:56:56,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:56:56,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:56:56,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:56:56,463 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 15:56:56,464 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 15:56:56,464 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 15:56:56,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:56:56,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-01 15:56:56,467 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:56:56,467 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:56:56,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:56:56,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:56:56,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:56:56,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:56:56,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:56:56,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:56:56,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:56:56,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:56:56,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:56:56,470 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:56:56,471 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:56:56,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:56:56,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:56:56,472 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:/tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-01 15:56:56,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:56:56,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:56:56,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:56:56,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:56:56,998 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:56:56,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 15:56:57,085 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/038d27636/16c4549078d74f4eb40dcddad1788e0c/FLAGc84d533b6 [2020-12-01 15:56:57,707 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:56:57,707 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-01 15:56:57,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/038d27636/16c4549078d74f4eb40dcddad1788e0c/FLAGc84d533b6 [2020-12-01 15:56:58,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/data/038d27636/16c4549078d74f4eb40dcddad1788e0c [2020-12-01 15:56:58,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:56:58,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-01 15:56:58,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:58,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:56:58,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:56:58,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f215e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58, skipping insertion in model container [2020-12-01 15:56:58,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:56:58,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:56:58,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:58,250 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-01 15:56:58,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:56:58,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:58,265 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:56:58,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:58,327 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:56:58,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58 WrapperNode [2020-12-01 15:56:58,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:58,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:56:58,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:56:58,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:56:58,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... [2020-12-01 15:56:58,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:56:58,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:56:58,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:56:58,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:56:58,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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 15:56:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-12-01 15:56:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:56:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2020-12-01 15:56:58,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-12-01 15:56:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2020-12-01 15:56:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:56:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-12-01 15:56:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:56:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:56:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:56:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-12-01 15:56:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:56:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-12-01 15:56:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 15:56:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-12-01 15:56:58,943 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:56:58,956 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-12-01 15:56:58,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:58 BoogieIcfgContainer [2020-12-01 15:56:58,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:56:58,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:56:58,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:56:58,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:56:58,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:56:58" (1/3) ... [2020-12-01 15:56:58,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d349f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:58, skipping insertion in model container [2020-12-01 15:56:58,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:58" (2/3) ... [2020-12-01 15:56:58,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d349f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:58, skipping insertion in model container [2020-12-01 15:56:58,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:58" (3/3) ... [2020-12-01 15:56:58,982 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-12-01 15:56:59,013 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:56:59,017 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-01 15:56:59,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-01 15:56:59,054 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:56:59,054 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-01 15:56:59,055 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:56:59,055 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:56:59,055 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:56:59,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:56:59,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:56:59,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:56:59,070 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-01 15:56:59,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:56:59,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:59,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:59,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 15:56:59,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:59,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2020-12-01 15:56:59,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:59,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911967775] [2020-12-01 15:56:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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 15:56:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:59,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:56:59,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:59,382 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 15:56:59,384 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:56:59,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:56:59,394 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:56:59,395 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-01 15:56:59,470 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 15:56:59,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:59,519 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 15:56:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911967775] [2020-12-01 15:56:59,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:59,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-01 15:56:59,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297172259] [2020-12-01 15:56:59,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:56:59,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:59,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:56:59,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:59,548 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-12-01 15:56:59,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:59,687 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-01 15:56:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:56:59,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-01 15:56:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:59,699 INFO L225 Difference]: With dead ends: 21 [2020-12-01 15:56:59,700 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 15:56:59,702 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 15:56:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 15:56:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 15:56:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:56:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-01 15:56:59,741 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-12-01 15:56:59,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:59,742 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-01 15:56:59,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:56:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-01 15:56:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:56:59,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:59,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:59,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:56:59,955 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 15:56:59,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:59,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2020-12-01 15:56:59,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:59,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092379951] [2020-12-01 15:56:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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 15:57:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:00,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:57:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:00,116 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 15:57:00,118 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-01 15:57:00,125 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-01 15:57:00,127 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-01 15:57:00,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-01 15:57:00,190 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 15:57:00,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:57:00,469 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 15:57:00,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092379951] [2020-12-01 15:57:00,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:00,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-01 15:57:00,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332653554] [2020-12-01 15:57:00,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:57:00,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:57:00,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:57:00,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:57:00,474 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-12-01 15:57:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:00,938 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-12-01 15:57:00,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:57:00,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-12-01 15:57:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:00,942 INFO L225 Difference]: With dead ends: 28 [2020-12-01 15:57:00,942 INFO L226 Difference]: Without dead ends: 28 [2020-12-01 15:57:00,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:57:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-01 15:57:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-12-01 15:57:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 15:57:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-12-01 15:57:00,955 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2020-12-01 15:57:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:00,955 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-12-01 15:57:00,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:57:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-12-01 15:57:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:57:00,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:00,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:01,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:57:01,161 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 15:57:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2020-12-01 15:57:01,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:57:01,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715388679] [2020-12-01 15:57:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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 15:57:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:01,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:57:01,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:57:01,487 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 15:57:01,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:57:01,962 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 15:57:01,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715388679] [2020-12-01 15:57:01,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:01,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2020-12-01 15:57:01,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632794651] [2020-12-01 15:57:01,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:57:01,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:57:01,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:57:01,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2020-12-01 15:57:01,965 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2020-12-01 15:57:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:02,266 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-12-01 15:57:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:57:02,268 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-12-01 15:57:02,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:02,269 INFO L225 Difference]: With dead ends: 25 [2020-12-01 15:57:02,269 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 15:57:02,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2020-12-01 15:57:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 15:57:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-01 15:57:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 15:57:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-01 15:57:02,275 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-12-01 15:57:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:02,275 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-01 15:57:02,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:57:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-01 15:57:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:57:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:02,277 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:02,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:57:02,488 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-12-01 15:57:02,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:02,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2020-12-01 15:57:02,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:57:02,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70918401] [2020-12-01 15:57:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/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 15:57:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:57:02,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:57:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:57:02,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:57:02,634 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 15:57:02,634 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:57:02,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:57:02,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:57:02 BoogieIcfgContainer [2020-12-01 15:57:02,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:57:02,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:57:02,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:57:02,867 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:57:02,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:58" (3/4) ... [2020-12-01 15:57:02,869 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:57:02,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0f9eb7fe-cb92-45a4-b24d-07012437c80e/bin/uautomizer/witness.graphml [2020-12-01 15:57:02,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:57:02,931 INFO L168 Benchmark]: Toolchain (without parser) took 4907.44 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 48.8 MB in the beginning and 65.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:02,931 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 65.0 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:02,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.80 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 38.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:02,932 INFO L168 Benchmark]: Boogie Preprocessor took 70.88 ms. Allocated memory is still 65.0 MB. Free memory was 38.3 MB in the beginning and 36.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:02,933 INFO L168 Benchmark]: RCFGBuilder took 553.28 ms. Allocated memory is still 65.0 MB. Free memory was 36.6 MB in the beginning and 42.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:02,934 INFO L168 Benchmark]: TraceAbstraction took 3905.31 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 42.6 MB in the beginning and 31.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:02,935 INFO L168 Benchmark]: Witness Printer took 63.07 ms. Allocated memory is still 83.9 MB. Free memory was 31.9 MB in the beginning and 65.9 MB in the end (delta: -33.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:02,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 65.0 MB. Free memory is still 48.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.80 ms. Allocated memory is still 65.0 MB. Free memory was 48.6 MB in the beginning and 38.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.88 ms. Allocated memory is still 65.0 MB. Free memory was 38.3 MB in the beginning and 36.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 553.28 ms. Allocated memory is still 65.0 MB. Free memory was 36.6 MB in the beginning and 42.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3905.31 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 42.6 MB in the beginning and 31.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 63.07 ms. Allocated memory is still 83.9 MB. Free memory was 31.9 MB in the beginning and 65.9 MB in the end (delta: -33.9 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: 3.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.9s, 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, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s 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, 1.3s 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...