./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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-a4ecdab [2020-11-30 00:14:32,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:32,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:32,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:32,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:32,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:32,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:33,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:33,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:33,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:33,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:33,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:33,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:33,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:33,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:33,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:33,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:33,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:33,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:33,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:33,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:33,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:33,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:33,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:33,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:33,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:33,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:33,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:33,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:33,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:33,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:33,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:33,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:33,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:33,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:33,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:33,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:33,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:33,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:33,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:33,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:33,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-30 00:14:33,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:33,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:33,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:33,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:33,141 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:33,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:33,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:33,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:14:33,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:33,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:33,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:33,144 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:14:33,144 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:14:33,144 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:14:33,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:33,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:14:33,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:33,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:33,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:33,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:33,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:33,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:33,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:33,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:33,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:33,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:33,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:33,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:33,149 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_954168b4-df7f-4b36-b6c0-b135e517512a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-11-30 00:14:33,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:33,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:33,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:33,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:33,550 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:33,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-30 00:14:33,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/8338fb500/dc7c28d5ebcf46d3ad3cdb515df611ea/FLAG6237ac7fc [2020-11-30 00:14:34,248 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:34,249 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-30 00:14:34,254 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/8338fb500/dc7c28d5ebcf46d3ad3cdb515df611ea/FLAG6237ac7fc [2020-11-30 00:14:34,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/8338fb500/dc7c28d5ebcf46d3ad3cdb515df611ea [2020-11-30 00:14:34,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:34,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:14:34,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:34,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:34,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:34,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@144231bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34, skipping insertion in model container [2020-11-30 00:14:34,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:34" (1/1) ... [2020-11-30 00:14:34,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:34,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:34,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:34,879 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) [2020-11-30 00:14:34,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5665e748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:34, skipping insertion in model container [2020-11-30 00:14:34,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:34,880 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-11-30 00:14:34,883 INFO L168 Benchmark]: Toolchain (without parser) took 274.33 ms. Allocated memory is still 104.9 MB. Free memory was 80.2 MB in the beginning and 83.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:34,884 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 104.9 MB. Free memory is still 62.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:34,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.62 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 83.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:34,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 104.9 MB. Free memory is still 62.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.62 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 83.8 MB in the end (delta: -3.8 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-a4ecdab [2020-11-30 00:14:37,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:37,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:37,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:37,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:37,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:37,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:37,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:37,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:37,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:37,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:37,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:37,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:37,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:37,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:37,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:37,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:37,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:37,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:37,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:37,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:37,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:37,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:37,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:37,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:37,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:37,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:37,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:37,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:37,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:37,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:37,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:37,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:37,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:37,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:37,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:37,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:37,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:37,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:37,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:37,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:37,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-11-30 00:14:37,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:37,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:37,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:37,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:37,574 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:37,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:37,574 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:37,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:14:37,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:37,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:37,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:37,575 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 00:14:37,576 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 00:14:37,576 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 00:14:37,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:37,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 00:14:37,580 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:14:37,580 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:14:37,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:37,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:37,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:37,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:37,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:37,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:37,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:37,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:37,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:37,583 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:14:37,584 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:14:37,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:37,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:14:37,585 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_954168b4-df7f-4b36-b6c0-b135e517512a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-11-30 00:14:38,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:38,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:38,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:38,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:38,062 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:38,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-30 00:14:38,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/4893223cd/42496ff0f39d4e38b3a58a528e200771/FLAGe28e46cfa [2020-11-30 00:14:38,821 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:38,821 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-30 00:14:38,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/4893223cd/42496ff0f39d4e38b3a58a528e200771/FLAGe28e46cfa [2020-11-30 00:14:39,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/data/4893223cd/42496ff0f39d4e38b3a58a528e200771 [2020-11-30 00:14:39,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:39,180 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-30 00:14:39,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:39,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:39,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:39,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f3c8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39, skipping insertion in model container [2020-11-30 00:14:39,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:39,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:39,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:39,379 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-30 00:14:39,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:39,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:39,394 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:39,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:39,448 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:39,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39 WrapperNode [2020-11-30 00:14:39,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:39,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:39,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:39,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:39,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... [2020-11-30 00:14:39,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:39,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:39,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:39,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:39,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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 [2020-11-30 00:14:39,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-30 00:14:39,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:39,631 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2020-11-30 00:14:39,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-30 00:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2020-11-30 00:14:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:14:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-30 00:14:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:14:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:14:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-30 00:14:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-11-30 00:14:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:14:39,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-11-30 00:14:40,147 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:40,148 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-30 00:14:40,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:40 BoogieIcfgContainer [2020-11-30 00:14:40,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:40,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:40,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:40,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:40,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:39" (1/3) ... [2020-11-30 00:14:40,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2a6758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:40, skipping insertion in model container [2020-11-30 00:14:40,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:39" (2/3) ... [2020-11-30 00:14:40,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2a6758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:40, skipping insertion in model container [2020-11-30 00:14:40,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:40" (3/3) ... [2020-11-30 00:14:40,163 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-11-30 00:14:40,177 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:40,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:14:40,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:14:40,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:40,265 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 00:14:40,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:40,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:40,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:40,266 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:40,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:40,266 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-30 00:14:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:14:40,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:40,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:40,304 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-11-30 00:14:40,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:40,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2020-11-30 00:14:40,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:40,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834602276] [2020-11-30 00:14:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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 [2020-11-30 00:14:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:40,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:14:40,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:40,565 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 00:14:40,566 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:14:40,576 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:14:40,577 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:14:40,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-30 00:14:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:40,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:40,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834602276] [2020-11-30 00:14:40,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:40,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 00:14:40,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121602028] [2020-11-30 00:14:40,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:14:40,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:14:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:40,718 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-11-30 00:14:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:40,880 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-11-30 00:14:40,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:14:40,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:14:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:40,892 INFO L225 Difference]: With dead ends: 21 [2020-11-30 00:14:40,893 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:14:40,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:14:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:14:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:14:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:14:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-30 00:14:40,937 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-11-30 00:14:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:40,938 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-30 00:14:40,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:14:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-30 00:14:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:14:40,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:40,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:41,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:14:41,141 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-11-30 00:14:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:41,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2020-11-30 00:14:41,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:41,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3679191] [2020-11-30 00:14:41,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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 [2020-11-30 00:14:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:41,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:14:41,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:41,251 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-30 00:14:41,252 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 00:14:41,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 00:14:41,262 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 00:14:41,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-30 00:14:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:41,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:41,513 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-11-30 00:14:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3679191] [2020-11-30 00:14:41,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:41,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 00:14:41,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222743447] [2020-11-30 00:14:41,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:14:41,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:41,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:14:41,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:14:41,728 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-11-30 00:14:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:42,197 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-11-30 00:14:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:14:42,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-11-30 00:14:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:42,202 INFO L225 Difference]: With dead ends: 28 [2020-11-30 00:14:42,202 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 00:14:42,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:14:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 00:14:42,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-30 00:14:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:14:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 00:14:42,212 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2020-11-30 00:14:42,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:42,214 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 00:14:42,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:14:42,214 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 00:14:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:14:42,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:42,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:42,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:14:42,432 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-11-30 00:14:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2020-11-30 00:14:42,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:42,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299216861] [2020-11-30 00:14:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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 [2020-11-30 00:14:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:14:42,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:14:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:42,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:14:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:43,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299216861] [2020-11-30 00:14:43,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:43,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2020-11-30 00:14:43,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191761369] [2020-11-30 00:14:43,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:14:43,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:14:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:14:43,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:14:43,348 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2020-11-30 00:14:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:43,786 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-11-30 00:14:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:14:43,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-11-30 00:14:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:43,789 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:14:43,789 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:14:43,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:14:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:14:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:14:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:14:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-30 00:14:43,795 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-11-30 00:14:43,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:43,796 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-30 00:14:43,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:14:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-30 00:14:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:14:43,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:43,798 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:44,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:14:44,010 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-11-30 00:14:44,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:44,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2020-11-30 00:14:44,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:14:44,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106189598] [2020-11-30 00:14:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/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 [2020-11-30 00:14:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:44,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:44,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:44,141 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:14:44,141 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:44,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:14:44,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:44 BoogieIcfgContainer [2020-11-30 00:14:44,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:44,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:44,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:44,365 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:44,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:40" (3/4) ... [2020-11-30 00:14:44,368 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:14:44,413 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_954168b4-df7f-4b36-b6c0-b135e517512a/bin/uautomizer/witness.graphml [2020-11-30 00:14:44,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:44,416 INFO L168 Benchmark]: Toolchain (without parser) took 5234.95 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 38.2 MB in the beginning and 37.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:44,422 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:44,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.47 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 43.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:44,431 INFO L168 Benchmark]: Boogie Preprocessor took 67.14 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 41.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:44,434 INFO L168 Benchmark]: RCFGBuilder took 629.21 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 28.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:44,440 INFO L168 Benchmark]: TraceAbstraction took 4210.01 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 28.2 MB in the beginning and 38.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:44,446 INFO L168 Benchmark]: Witness Printer took 48.90 ms. Allocated memory is still 75.5 MB. Free memory was 38.8 MB in the beginning and 37.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:44,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.47 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 43.2 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.14 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 41.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 629.21 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 28.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4210.01 ms. Allocated memory was 58.7 MB in the beginning and 75.5 MB in the end (delta: 16.8 MB). Free memory was 28.2 MB in the beginning and 38.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Witness Printer took 48.90 ms. Allocated memory is still 75.5 MB. Free memory was 38.8 MB in the beginning and 37.2 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: 4.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 63 SDslu, 105 SDs, 0 SdLazy, 110 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s 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, 1.5s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 8294 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...