./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_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/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 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_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/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 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 [2020-11-22 13:08:16,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:16,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:16,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:16,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:16,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:16,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:16,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:16,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:16,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:16,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:16,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:16,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:16,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:16,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:16,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:16,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:16,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:16,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:16,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:16,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:16,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:16,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:16,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:16,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:16,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:16,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:16,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:16,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:16,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:16,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:16,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:16,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:16,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:16,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:16,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:16,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:16,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:16,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:16,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:16,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:16,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:08:17,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:17,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:17,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:17,012 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:17,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:17,013 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:17,013 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:17,013 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:17,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:17,014 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:17,015 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:17,015 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:17,015 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:17,016 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:17,016 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:17,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:08:17,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:08:17,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:17,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:17,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:08:17,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:17,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:17,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:17,024 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:08:17,024 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:08:17,026 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:08:17,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:17,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:17,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:17,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:17,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:17,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:17,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:17,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:17,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:17,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:17,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:17,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:17,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:17,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:17,032 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_242f19dd-e0e4-448a-9ef1-8ca677770bce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-11-22 13:08:17,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:17,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:17,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:17,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:17,313 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:17,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-22 13:08:17,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/7b451ebb9/31c9bc7623204993a0feec9219f03427/FLAG3f08c190d [2020-11-22 13:08:17,776 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:17,776 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-22 13:08:17,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/7b451ebb9/31c9bc7623204993a0feec9219f03427/FLAG3f08c190d [2020-11-22 13:08:18,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/7b451ebb9/31c9bc7623204993a0feec9219f03427 [2020-11-22 13:08:18,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:18,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:18,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:18,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:18,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:18,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:18" (1/1) ... [2020-11-22 13:08:18,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec2756d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:18, skipping insertion in model container [2020-11-22 13:08:18,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:18" (1/1) ... [2020-11-22 13:08:18,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:18,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:18,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:18,431 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) [2020-11-22 13:08:18,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5022533a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:18, skipping insertion in model container [2020-11-22 13:08:18,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:18,432 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:08:18,435 INFO L168 Benchmark]: Toolchain (without parser) took 223.66 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 71.6 MB in the end (delta: -7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:18,436 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:18,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.66 ms. Allocated memory is still 92.3 MB. Free memory was 64.2 MB in the beginning and 71.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:18,445 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 92.3 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 214.66 ms. Allocated memory is still 92.3 MB. Free memory was 64.2 MB in the beginning and 71.6 MB in the end (delta: -7.4 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 [2020-11-22 13:08:20,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:20,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:20,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:20,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:20,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:20,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:20,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:20,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:20,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:20,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:20,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:20,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:20,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:20,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:20,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:20,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:20,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:20,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:20,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:20,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:20,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:20,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:20,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:20,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:20,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:20,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:20,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:20,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:20,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:20,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:20,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:20,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:20,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:20,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:20,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:20,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:20,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:20,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:20,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:20,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:20,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:08:20,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:20,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:20,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:20,848 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:20,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:20,849 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:20,849 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:20,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:20,850 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:20,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:08:20,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:08:20,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:20,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:20,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:08:20,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:20,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:20,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:20,853 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:08:20,853 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:08:20,854 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:08:20,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:20,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:08:20,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:08:20,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:08:20,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:20,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:20,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:20,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:08:20,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:20,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:20,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:20,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:20,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:20,857 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:08:20,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:08:20,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:20,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:20,857 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_242f19dd-e0e4-448a-9ef1-8ca677770bce/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-11-22 13:08:21,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:21,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:21,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:21,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:21,293 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:21,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-22 13:08:21,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/12f89ecad/dc0595711d8843c197d2e67588c78c00/FLAG92600aec2 [2020-11-22 13:08:21,875 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:21,875 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-11-22 13:08:21,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/12f89ecad/dc0595711d8843c197d2e67588c78c00/FLAG92600aec2 [2020-11-22 13:08:22,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/data/12f89ecad/dc0595711d8843c197d2e67588c78c00 [2020-11-22 13:08:22,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:22,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:22,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:22,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:22,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:22,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623c4ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22, skipping insertion in model container [2020-11-22 13:08:22,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:22,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:22,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:22,498 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:08:22,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:22,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:22,510 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:22,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:22,544 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:22,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22 WrapperNode [2020-11-22 13:08:22,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:22,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:22,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:22,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:22,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:22,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:22,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:22,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:22,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... [2020-11-22 13:08:22,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:22,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:22,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:22,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:22,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/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 [2020-11-22 13:08:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:08:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:08:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:22,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:08:23,185 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:23,186 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-22 13:08:23,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:23 BoogieIcfgContainer [2020-11-22 13:08:23,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:23,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:23,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:23,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:23,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:22" (1/3) ... [2020-11-22 13:08:23,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd844af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:23, skipping insertion in model container [2020-11-22 13:08:23,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22" (2/3) ... [2020-11-22 13:08:23,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd844af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:23, skipping insertion in model container [2020-11-22 13:08:23,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:23" (3/3) ... [2020-11-22 13:08:23,195 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-11-22 13:08:23,206 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:23,209 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:08:23,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:08:23,252 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:23,252 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:08:23,252 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:23,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:23,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:23,253 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:23,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:23,253 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-22 13:08:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:08:23,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:23,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:08:23,278 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:08:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:23,284 INFO L82 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2020-11-22 13:08:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:23,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130552624] [2020-11-22 13:08:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/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 [2020-11-22 13:08:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:23,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:08:23,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:23,491 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 [2020-11-22 13:08:23,492 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:08:23,502 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:23,502 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:08:23,502 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:08:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130552624] [2020-11-22 13:08:23,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:23,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:08:23,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145193533] [2020-11-22 13:08:23,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:23,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:23,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:23,561 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-11-22 13:08:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:23,615 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-11-22 13:08:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:23,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-22 13:08:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:23,627 INFO L225 Difference]: With dead ends: 12 [2020-11-22 13:08:23,627 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 13:08:23,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 13:08:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 13:08:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 13:08:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-22 13:08:23,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-11-22 13:08:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:23,659 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-22 13:08:23,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-22 13:08:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:08:23,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:23,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:08:23,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:08:23,870 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:08:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:23,871 INFO L82 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2020-11-22 13:08:23,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:23,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038106862] [2020-11-22 13:08:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/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 [2020-11-22 13:08:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:23,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-22 13:08:23,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:23,960 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 [2020-11-22 13:08:23,961 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:08:23,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:23,973 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:08:23,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-22 13:08:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:24,129 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2020-11-22 13:08:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:24,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038106862] [2020-11-22 13:08:24,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:24,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 13:08:24,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166202727] [2020-11-22 13:08:24,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:24,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:24,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:24,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:24,142 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2020-11-22 13:08:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:24,262 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-11-22 13:08:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:24,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-22 13:08:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:24,266 INFO L225 Difference]: With dead ends: 22 [2020-11-22 13:08:24,266 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:08:24,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:08:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2020-11-22 13:08:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:08:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2020-11-22 13:08:24,270 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 4 [2020-11-22 13:08:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:24,271 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-11-22 13:08:24,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2020-11-22 13:08:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:08:24,271 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:24,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:24,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:08:24,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:08:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2020-11-22 13:08:24,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:24,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834579754] [2020-11-22 13:08:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/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 [2020-11-22 13:08:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:24,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:08:24,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:24,599 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:24,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2020-11-22 13:08:24,604 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:24,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:24,611 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:24,611 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:9 [2020-11-22 13:08:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:24,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:24,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834579754] [2020-11-22 13:08:24,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:24,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:08:24,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835083305] [2020-11-22 13:08:24,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:08:24,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:24,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:08:24,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:08:24,708 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 6 states. [2020-11-22 13:08:24,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:24,814 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-22 13:08:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:24,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-22 13:08:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:24,817 INFO L225 Difference]: With dead ends: 15 [2020-11-22 13:08:24,817 INFO L226 Difference]: Without dead ends: 15 [2020-11-22 13:08:24,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:08:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-22 13:08:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-22 13:08:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-22 13:08:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-22 13:08:24,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2020-11-22 13:08:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:24,820 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-22 13:08:24,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:08:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-22 13:08:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:08:24,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:24,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:25,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:08:25,022 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:08:25,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:25,023 INFO L82 PathProgramCache]: Analyzing trace with hash 528133503, now seen corresponding path program 1 times [2020-11-22 13:08:25,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:25,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823795860] [2020-11-22 13:08:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/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 [2020-11-22 13:08:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:25,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:08:25,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:25,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:25,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823795860] [2020-11-22 13:08:25,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1262220906] [2020-11-22 13:08:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:08:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:25,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:08:25,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:25,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:25,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447589904] [2020-11-22 13:08:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:25,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:08:25,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:25,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:25,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 13:08:25,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2020-11-22 13:08:25,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75199539] [2020-11-22 13:08:25,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:08:25,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:25,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:08:25,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:08:25,297 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2020-11-22 13:08:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:25,412 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-11-22 13:08:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:08:25,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-22 13:08:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:25,413 INFO L225 Difference]: With dead ends: 30 [2020-11-22 13:08:25,413 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 13:08:25,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:08:25,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 13:08:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2020-11-22 13:08:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:08:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-11-22 13:08:25,418 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2020-11-22 13:08:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:25,419 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-22 13:08:25,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:08:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-11-22 13:08:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:08:25,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:25,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:26,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:26,039 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:08:26,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:26,040 INFO L82 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2020-11-22 13:08:26,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:26,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680324943] [2020-11-22 13:08:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:26,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:08:26,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:26,188 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:26,188 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 15 [2020-11-22 13:08:26,207 INFO L545 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:26,216 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:26,219 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:26,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:15 [2020-11-22 13:08:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:26,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:26,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680324943] [2020-11-22 13:08:26,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [768240133] [2020-11-22 13:08:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:08:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:26,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:08:26,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:26,498 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:26,498 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 15 [2020-11-22 13:08:26,503 INFO L545 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:26,514 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:26,516 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:26,516 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:15 [2020-11-22 13:08:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:26,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:26,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556780102] [2020-11-22 13:08:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-22 13:08:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:26,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:08:26,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:26,634 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:26,634 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 15 [2020-11-22 13:08:26,636 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:26,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:08:26,640 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-22 13:08:26,641 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2020-11-22 13:08:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:26,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:26,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 13:08:26,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2020-11-22 13:08:26,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525908912] [2020-11-22 13:08:26,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:08:26,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:08:26,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:08:26,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:08:26,677 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 8 states. [2020-11-22 13:08:26,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:26,888 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-11-22 13:08:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:08:26,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-11-22 13:08:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:26,889 INFO L225 Difference]: With dead ends: 20 [2020-11-22 13:08:26,889 INFO L226 Difference]: Without dead ends: 20 [2020-11-22 13:08:26,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:08:26,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-22 13:08:26,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-22 13:08:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:08:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-22 13:08:26,894 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-11-22 13:08:26,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:26,894 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-22 13:08:26,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:08:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-22 13:08:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:08:26,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:26,895 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-11-22 13:08:27,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:27,501 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-11-22 13:08:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:27,501 INFO L82 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 1 times [2020-11-22 13:08:27,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:08:27,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274931479] [2020-11-22 13:08:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 13:08:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:27,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:27,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:27,639 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:08:27,639 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:08:27,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-22 13:08:27,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:27 BoogieIcfgContainer [2020-11-22 13:08:27,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:27,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:27,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:27,859 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:27,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:23" (3/4) ... [2020-11-22 13:08:27,861 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:08:27,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_242f19dd-e0e4-448a-9ef1-8ca677770bce/bin/utaipan/witness.graphml [2020-11-22 13:08:27,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:27,899 INFO L168 Benchmark]: Toolchain (without parser) took 5623.39 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 27.2 MB in the beginning and 47.4 MB in the end (delta: -20.1 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:27,899 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.3 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:27,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.71 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 30.6 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:27,900 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.80 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 43.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:27,900 INFO L168 Benchmark]: Boogie Preprocessor took 32.88 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 42.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:27,901 INFO L168 Benchmark]: RCFGBuilder took 523.31 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 30.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:27,901 INFO L168 Benchmark]: TraceAbstraction took 4669.85 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 49.4 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:27,902 INFO L168 Benchmark]: Witness Printer took 38.68 ms. Allocated memory is still 73.4 MB. Free memory was 49.4 MB in the beginning and 47.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:27,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.3 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.71 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 30.6 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.80 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 30.6 MB in the beginning and 43.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.88 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 42.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 523.31 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 30.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4669.85 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.2 MB in the beginning and 49.4 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 38.68 ms. Allocated memory is still 73.4 MB. Free memory was 49.4 MB in the beginning and 47.4 MB in the end (delta: 2.0 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}; [L2] int i = 0; [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 44 SDslu, 73 SDs, 0 SdLazy, 104 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=4, 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, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 4 QuantifiedInterpolants, 11154 SizeOfPredicates, 47 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/24 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...