./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --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_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 .............................................................................................................................................. 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_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134c0db99ce5251339642354d8ec6411765b7878 ....................................................................................................................................................................................................................................................................................................................................................................................... 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 02:07:18,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:07:18,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:07:18,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:07:18,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:07:18,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:07:18,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:07:18,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:07:18,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:07:18,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:07:18,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:07:18,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:07:18,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:07:18,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:07:18,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:07:18,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:07:18,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:07:18,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:07:18,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:07:18,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:07:18,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:07:18,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:07:18,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:07:18,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:07:18,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:07:18,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:07:18,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:07:18,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:07:18,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:07:18,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:07:18,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:07:18,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:07:18,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:07:18,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:07:18,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:07:18,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:07:18,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:07:18,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:07:18,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:07:18,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:07:18,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:07:18,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-30 02:07:18,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:07:18,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:07:18,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:07:18,520 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:07:18,520 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:07:18,520 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:07:18,520 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:07:18,520 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:07:18,521 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:07:18,521 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:07:18,521 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:07:18,521 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:07:18,522 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:07:18,522 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:07:18,522 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:07:18,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:07:18,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:07:18,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:07:18,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:07:18,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:07:18,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:07:18,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:07:18,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:07:18,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:07:18,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:07:18,525 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:07:18,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:07:18,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:07:18,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:07:18,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:07:18,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:07:18,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:07:18,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:07:18,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:07:18,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:07:18,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:07:18,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:07:18,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:07:18,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:07:18,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:07:18,528 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2020-11-30 02:07:18,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:07:18,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:07:18,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:07:18,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:07:18,837 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:07:18,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-30 02:07:18,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/782595982/e1c3a3887c7e48db8a05b33d3858f85a/FLAG24e844f3c [2020-11-30 02:07:19,565 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:07:19,565 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-30 02:07:19,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/782595982/e1c3a3887c7e48db8a05b33d3858f85a/FLAG24e844f3c [2020-11-30 02:07:19,883 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/782595982/e1c3a3887c7e48db8a05b33d3858f85a [2020-11-30 02:07:19,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:07:19,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:07:19,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:07:19,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:07:19,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:07:19,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:07:19" (1/1) ... [2020-11-30 02:07:19,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee93724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:19, skipping insertion in model container [2020-11-30 02:07:19,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:07:19" (1/1) ... [2020-11-30 02:07:19,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:07:19,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:07:20,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:07:20,305 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 02:07:20,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43d0b4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:20, skipping insertion in model container [2020-11-30 02:07:20,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:07:20,306 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-30 02:07:20,309 INFO L168 Benchmark]: Toolchain (without parser) took 410.90 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 48.7 MB in the beginning and 76.5 MB in the end (delta: -27.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:20,310 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:20,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.52 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 48.5 MB in the beginning and 76.5 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:20,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 51.8 MB in the beginning and 51.7 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.52 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 48.5 MB in the beginning and 76.5 MB in the end (delta: -27.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 535]: 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 02:07:22,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:07:22,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:07:23,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:07:23,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:07:23,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:07:23,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:07:23,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:07:23,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:07:23,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:07:23,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:07:23,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:07:23,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:07:23,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:07:23,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:07:23,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:07:23,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:07:23,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:07:23,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:07:23,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:07:23,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:07:23,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:07:23,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:07:23,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:07:23,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:07:23,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:07:23,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:07:23,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:07:23,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:07:23,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:07:23,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:07:23,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:07:23,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:07:23,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:07:23,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:07:23,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:07:23,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:07:23,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:07:23,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:07:23,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:07:23,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:07:23,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-30 02:07:23,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:07:23,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:07:23,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:07:23,183 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:07:23,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:07:23,184 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:07:23,184 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:07:23,184 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:07:23,184 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:07:23,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:07:23,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:07:23,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:07:23,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:07:23,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:07:23,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:07:23,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:07:23,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:07:23,190 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:07:23,190 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:07:23,190 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:07:23,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:07:23,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:07:23,191 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:07:23,191 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:07:23,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:07:23,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:07:23,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:07:23,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:07:23,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:07:23,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:07:23,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:07:23,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:07:23,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:07:23,214 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:07:23,214 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:07:23,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:07:23,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:07:23,215 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_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2020-11-30 02:07:23,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:07:23,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:07:23,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:07:23,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:07:23,697 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:07:23,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-30 02:07:23,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/9492d9d0f/3fe06aec918c4f1b9622c7a1fb768657/FLAG5b95d7cdd [2020-11-30 02:07:24,558 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:07:24,559 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-30 02:07:24,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/9492d9d0f/3fe06aec918c4f1b9622c7a1fb768657/FLAG5b95d7cdd [2020-11-30 02:07:24,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/data/9492d9d0f/3fe06aec918c4f1b9622c7a1fb768657 [2020-11-30 02:07:24,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:07:24,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:07:24,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:07:24,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:07:24,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:07:24,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:07:24" (1/1) ... [2020-11-30 02:07:24,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ef317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:24, skipping insertion in model container [2020-11-30 02:07:24,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:07:24" (1/1) ... [2020-11-30 02:07:24,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:07:24,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:07:25,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:07:25,151 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-30 02:07:25,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:07:25,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:07:25,208 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:07:25,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:07:25,337 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:07:25,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25 WrapperNode [2020-11-30 02:07:25,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:07:25,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:07:25,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:07:25,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:07:25,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:07:25,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:07:25,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:07:25,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:07:25,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... [2020-11-30 02:07:25,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:07:25,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:07:25,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:07:25,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:07:25,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/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 02:07:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:07:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:07:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:07:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:07:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:07:25,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:07:26,579 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:07:26,579 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 02:07:26,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:07:26 BoogieIcfgContainer [2020-11-30 02:07:26,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:07:26,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:07:26,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:07:26,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:07:26,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:07:24" (1/3) ... [2020-11-30 02:07:26,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29290d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:07:26, skipping insertion in model container [2020-11-30 02:07:26,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:07:25" (2/3) ... [2020-11-30 02:07:26,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29290d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:07:26, skipping insertion in model container [2020-11-30 02:07:26,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:07:26" (3/3) ... [2020-11-30 02:07:26,591 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2020-11-30 02:07:26,603 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:07:26,607 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2020-11-30 02:07:26,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2020-11-30 02:07:26,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:07:26,645 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 02:07:26,645 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:07:26,645 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:07:26,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:07:26,646 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:07:26,646 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:07:26,646 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:07:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-30 02:07:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:07:26,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:26,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:26,670 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 02:07:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-11-30 02:07:26,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:07:26,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459433305] [2020-11-30 02:07:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/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 02:07:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:26,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:07:26,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:07:27,069 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 18 [2020-11-30 02:07:27,071 INFO L350 Elim1Store]: treesize reduction 93, result has 20.5 percent of original size [2020-11-30 02:07:27,072 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2020-11-30 02:07:27,074 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:07:27,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:27,129 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-30 02:07:27,136 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:33 [2020-11-30 02:07:27,223 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 02:07:27,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:07:27,261 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 02:07:27,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459433305] [2020-11-30 02:07:27,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:27,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-30 02:07:27,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935653363] [2020-11-30 02:07:27,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:07:27,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:07:27,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:07:27,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:07:27,296 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-11-30 02:07:27,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:27,723 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-11-30 02:07:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:07:27,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:07:27,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:27,741 INFO L225 Difference]: With dead ends: 64 [2020-11-30 02:07:27,741 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 02:07:27,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:07:27,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 02:07:27,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-30 02:07:27,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-30 02:07:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-11-30 02:07:27,792 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 7 [2020-11-30 02:07:27,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:27,792 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-11-30 02:07:27,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:07:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-11-30 02:07:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:07:27,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:27,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:28,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:07:28,013 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 02:07:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-11-30 02:07:28,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:07:28,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71609723] [2020-11-30 02:07:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/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 02:07:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:07:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:07:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:07:28,170 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_33|], 4=[|v_#valid_44|]} [2020-11-30 02:07:28,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 02:07:28,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 02:07:28,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 02:07:28,264 INFO L350 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2020-11-30 02:07:28,264 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2020-11-30 02:07:28,265 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:07:28,308 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:28,337 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:28,337 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2020-11-30 02:07:28,340 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:07:28,386 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:28,392 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-30 02:07:28,392 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:41, output treesize:39 [2020-11-30 02:07:28,501 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 02:07:28,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:07:28,700 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-30 02:07:28,701 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-30 02:07:28,703 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:07:28,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:28,810 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:28,810 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2020-11-30 02:07:28,812 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:07:28,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:07:28,888 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:07:28,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:07:28,905 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-11-30 02:07:28,905 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:47, output treesize:11 [2020-11-30 02:07:28,984 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 02:07:28,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71609723] [2020-11-30 02:07:28,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:07:28,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 02:07:28,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489353482] [2020-11-30 02:07:28,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 02:07:28,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:07:28,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 02:07:28,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:07:28,989 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 8 states. [2020-11-30 02:07:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:07:31,464 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2020-11-30 02:07:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:07:31,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-30 02:07:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:07:31,468 INFO L225 Difference]: With dead ends: 237 [2020-11-30 02:07:31,469 INFO L226 Difference]: Without dead ends: 237 [2020-11-30 02:07:31,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:07:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-11-30 02:07:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 68. [2020-11-30 02:07:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-30 02:07:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-11-30 02:07:31,483 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2020-11-30 02:07:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:07:31,483 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-11-30 02:07:31,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 02:07:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-11-30 02:07:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:07:31,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:07:31,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:07:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:07:31,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 02:07:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:07:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-11-30 02:07:31,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:07:31,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006003566] [2020-11-30 02:07:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/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 02:07:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:07:31,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:07:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:07:31,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:07:31,855 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:07:31,868 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:07:32,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:07:32,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:07:32 BoogieIcfgContainer [2020-11-30 02:07:32,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:07:32,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:07:32,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:07:32,099 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:07:32,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:07:26" (3/4) ... [2020-11-30 02:07:32,101 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:07:32,152 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7d90cf42-78de-4189-b67b-87420ef705cb/bin/utaipan/witness.graphml [2020-11-30 02:07:32,152 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:07:32,154 INFO L168 Benchmark]: Toolchain (without parser) took 7386.45 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 64.2 MB in the end (delta: -6.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:32,154 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 73.4 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:32,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.38 ms. Allocated memory is still 73.4 MB. Free memory was 57.3 MB in the beginning and 54.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:32,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.53 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:32,156 INFO L168 Benchmark]: Boogie Preprocessor took 40.23 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:07:32,157 INFO L168 Benchmark]: RCFGBuilder took 1145.12 ms. Allocated memory is still 73.4 MB. Free memory was 50.6 MB in the beginning and 44.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:32,158 INFO L168 Benchmark]: TraceAbstraction took 5514.53 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 44.2 MB in the beginning and 65.4 MB in the end (delta: -21.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:32,158 INFO L168 Benchmark]: Witness Printer took 54.04 ms. Allocated memory is still 100.7 MB. Free memory was 65.4 MB in the beginning and 64.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:07:32,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 73.4 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.38 ms. Allocated memory is still 73.4 MB. Free memory was 57.3 MB in the beginning and 54.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.53 ms. Allocated memory is still 73.4 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.23 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1145.12 ms. Allocated memory is still 73.4 MB. Free memory was 50.6 MB in the beginning and 44.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5514.53 ms. Allocated memory was 73.4 MB in the beginning and 100.7 MB in the end (delta: 27.3 MB). Free memory was 44.2 MB in the beginning and 65.4 MB in the end (delta: -21.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 54.04 ms. Allocated memory is still 100.7 MB. Free memory was 65.4 MB in the beginning and 64.2 MB in the end (delta: 1.2 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: 542]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) [L532] COND TRUE M < 1 [L533] M = 1 [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; [L540] COND TRUE i < N [L542] size[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 27 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 387 SDslu, 288 SDs, 0 SdLazy, 250 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred 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, 2 MinimizatonAttempts, 169 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 1404 SizeOfPredicates, 14 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...