./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.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_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 79a252c986c7b06f14f3ee394685573049ad76fb .............................................................................................................................................. 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_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 79a252c986c7b06f14f3ee394685573049ad76fb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:47:31,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:47:31,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:47:31,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:47:31,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:47:31,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:47:31,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:47:31,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:47:31,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:47:31,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:47:31,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:47:31,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:47:31,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:47:31,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:47:31,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:47:31,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:47:31,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:47:31,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:47:31,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:47:31,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:47:31,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:47:31,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:47:31,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:47:31,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:47:31,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:47:31,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:47:31,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:47:31,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:47:31,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:47:31,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:47:31,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:47:31,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:47:31,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:47:31,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:47:31,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:47:31,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:47:31,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:47:31,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:47:31,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:47:31,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:47:31,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:47:31,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 12:47:31,551 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:47:31,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:47:31,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:47:31,552 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:47:31,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:47:31,553 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:47:31,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:47:31,553 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:47:31,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:47:31,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:47:31,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:47:31,554 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:47:31,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:47:31,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:47:31,555 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:47:31,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:47:31,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:47:31,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:47:31,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:47:31,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:47:31,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:47:31,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:47:31,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:47:31,557 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:47:31,557 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:47:31,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:47:31,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:47:31,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:47:31,558 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:47:31,558 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:47:31,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:47:31,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:47:31,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:47:31,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:47:31,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:47:31,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:47:31,560 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:47:31,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:47:31,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:47:31,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:47:31,561 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_9f781eb3-7304-44f5-9635-843e41a16568/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a252c986c7b06f14f3ee394685573049ad76fb [2020-11-22 12:47:31,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:47:31,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:47:31,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:47:31,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:47:31,875 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:47:31,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-22 12:47:31,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/3ca294c79/ecd641565e594cb98a44bc881a566da6/FLAG3226484bc [2020-11-22 12:47:32,723 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:47:32,724 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-22 12:47:32,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/3ca294c79/ecd641565e594cb98a44bc881a566da6/FLAG3226484bc [2020-11-22 12:47:32,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/3ca294c79/ecd641565e594cb98a44bc881a566da6 [2020-11-22 12:47:32,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:47:32,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:47:33,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:33,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:47:33,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:47:33,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d37259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33, skipping insertion in model container [2020-11-22 12:47:33,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:32" (1/1) ... [2020-11-22 12:47:33,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:47:33,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:33,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:33,773 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 12:47:33,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a9db7b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:33, skipping insertion in model container [2020-11-22 12:47:33,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:33,774 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:47:33,777 INFO L168 Benchmark]: Toolchain (without parser) took 785.29 ms. Allocated memory is still 121.6 MB. Free memory was 87.6 MB in the beginning and 93.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:33,779 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:33,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.50 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 93.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:33,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 79.7 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 765.50 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 93.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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 12:47:36,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:47:36,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:47:36,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:47:36,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:47:36,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:47:36,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:47:36,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:47:36,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:47:36,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:47:36,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:47:36,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:47:36,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:47:36,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:47:36,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:47:36,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:47:36,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:47:36,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:47:36,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:47:36,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:47:36,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:47:36,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:47:36,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:47:36,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:47:36,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:47:36,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:47:36,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:47:36,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:47:36,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:47:36,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:47:36,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:47:36,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:47:36,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:47:36,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:47:36,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:47:36,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:47:36,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:47:36,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:47:36,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:47:36,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:47:36,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:47:36,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 12:47:36,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:47:36,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:47:36,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:47:36,168 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:47:36,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:47:36,169 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:47:36,169 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:47:36,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:47:36,170 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:47:36,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:47:36,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:47:36,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:47:36,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:47:36,172 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:47:36,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:47:36,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:47:36,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:47:36,173 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:47:36,174 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:47:36,174 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:47:36,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:47:36,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:47:36,175 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:47:36,175 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:47:36,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:47:36,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:47:36,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:47:36,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:47:36,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:47:36,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:47:36,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:47:36,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:47:36,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:47:36,178 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:47:36,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:47:36,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:47:36,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:47:36,180 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_9f781eb3-7304-44f5-9635-843e41a16568/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a252c986c7b06f14f3ee394685573049ad76fb [2020-11-22 12:47:36,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:47:36,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:47:36,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:47:36,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:47:36,618 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:47:36,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-22 12:47:36,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/c89978ee7/946131b16e4f42b8966f5fc04ba30e95/FLAG0b58a3d6e [2020-11-22 12:47:37,382 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:47:37,386 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-22 12:47:37,412 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/c89978ee7/946131b16e4f42b8966f5fc04ba30e95/FLAG0b58a3d6e [2020-11-22 12:47:37,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/data/c89978ee7/946131b16e4f42b8966f5fc04ba30e95 [2020-11-22 12:47:37,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:47:37,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:47:37,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:37,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:47:37,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:47:37,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:37" (1/1) ... [2020-11-22 12:47:37,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e02e630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:37, skipping insertion in model container [2020-11-22 12:47:37,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:47:37" (1/1) ... [2020-11-22 12:47:37,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:47:37,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:38,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:38,191 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:47:38,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:47:38,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:38,261 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:47:38,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:47:38,495 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:47:38,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38 WrapperNode [2020-11-22 12:47:38,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:47:38,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:38,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:47:38,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:47:38,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:47:38,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:47:38,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:47:38,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:47:38,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... [2020-11-22 12:47:38,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:47:38,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:47:38,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:47:38,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:47:38,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 12:47:38,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:47:38,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:47:38,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:47:38,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-22 12:47:38,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:47:38,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:47:38,979 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:47:38,980 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-22 12:47:38,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:38 BoogieIcfgContainer [2020-11-22 12:47:38,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:47:38,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:47:39,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:47:39,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:47:39,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:47:37" (1/3) ... [2020-11-22 12:47:39,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a34d976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:39, skipping insertion in model container [2020-11-22 12:47:39,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:47:38" (2/3) ... [2020-11-22 12:47:39,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a34d976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:47:39, skipping insertion in model container [2020-11-22 12:47:39,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:38" (3/3) ... [2020-11-22 12:47:39,010 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2020-11-22 12:47:39,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:47:39,034 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 12:47:39,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 12:47:39,089 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:47:39,089 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 12:47:39,089 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:47:39,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:47:39,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:47:39,090 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:47:39,090 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:47:39,090 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:47:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-22 12:47:39,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:47:39,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:39,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:47:39,124 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:47:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:39,134 INFO L82 PathProgramCache]: Analyzing trace with hash 889508744, now seen corresponding path program 1 times [2020-11-22 12:47:39,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:47:39,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639207970] [2020-11-22 12:47:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 12:47:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:39,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:47:39,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:39,331 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 12:47:39,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:39,369 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 12:47:39,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639207970] [2020-11-22 12:47:39,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:39,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:47:39,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71606804] [2020-11-22 12:47:39,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:39,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:47:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:39,397 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-11-22 12:47:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:39,470 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-22 12:47:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:39,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-22 12:47:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:39,481 INFO L225 Difference]: With dead ends: 21 [2020-11-22 12:47:39,481 INFO L226 Difference]: Without dead ends: 19 [2020-11-22 12:47:39,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:39,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-22 12:47:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-22 12:47:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 12:47:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-22 12:47:39,518 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2020-11-22 12:47:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:39,519 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-22 12:47:39,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-22 12:47:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:47:39,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:39,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:39,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:47:39,744 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:47:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:39,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1804967335, now seen corresponding path program 1 times [2020-11-22 12:47:39,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:47:39,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472137841] [2020-11-22 12:47:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 12:47:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:39,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:47:39,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:39,895 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 12:47:39,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:39,933 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 12:47:39,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472137841] [2020-11-22 12:47:39,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:39,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-22 12:47:39,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787153693] [2020-11-22 12:47:39,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:47:39,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:47:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:47:39,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:47:39,938 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2020-11-22 12:47:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:40,208 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-22 12:47:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 12:47:40,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-22 12:47:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:40,210 INFO L225 Difference]: With dead ends: 31 [2020-11-22 12:47:40,210 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 12:47:40,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-11-22 12:47:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 12:47:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-11-22 12:47:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:47:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-22 12:47:40,216 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 7 [2020-11-22 12:47:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:40,218 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-22 12:47:40,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:47:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-22 12:47:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:47:40,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:40,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:40,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:47:40,422 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:47:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:40,423 INFO L82 PathProgramCache]: Analyzing trace with hash 119412586, now seen corresponding path program 1 times [2020-11-22 12:47:40,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:47:40,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684907263] [2020-11-22 12:47:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 12:47:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:40,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:47:40,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:40,529 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 12:47:40,530 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:47:40,533 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:47:40,534 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 12:47:40,534 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 12:47:40,550 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 12:47:40,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:40,571 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 12:47:40,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684907263] [2020-11-22 12:47:40,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:40,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:47:40,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211618179] [2020-11-22 12:47:40,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:40,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:47:40,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:40,574 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-11-22 12:47:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:40,647 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-11-22 12:47:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:40,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:47:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:40,648 INFO L225 Difference]: With dead ends: 23 [2020-11-22 12:47:40,649 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 12:47:40,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 12:47:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-22 12:47:40,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:47:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-22 12:47:40,653 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2020-11-22 12:47:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:40,653 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-22 12:47:40,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-22 12:47:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:47:40,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:40,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:40,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:47:40,855 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:47:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:40,856 INFO L82 PathProgramCache]: Analyzing trace with hash 176927092, now seen corresponding path program 1 times [2020-11-22 12:47:40,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:47:40,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977061314] [2020-11-22 12:47:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/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 12:47:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:40,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:47:40,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:40,919 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 12:47:40,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:40,921 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 12:47:40,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977061314] [2020-11-22 12:47:40,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:40,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:47:40,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848327183] [2020-11-22 12:47:40,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:47:40,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:47:40,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:47:40,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:47:40,923 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-11-22 12:47:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:40,950 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-22 12:47:40,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:47:40,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-22 12:47:40,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:40,951 INFO L225 Difference]: With dead ends: 30 [2020-11-22 12:47:40,951 INFO L226 Difference]: Without dead ends: 28 [2020-11-22 12:47:40,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 12:47:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-22 12:47:40,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-22 12:47:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-22 12:47:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-22 12:47:40,955 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2020-11-22 12:47:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:40,956 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-22 12:47:40,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:47:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-22 12:47:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:47:40,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:40,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:41,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:47:41,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:47:41,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:41,158 INFO L82 PathProgramCache]: Analyzing trace with hash 176670888, now seen corresponding path program 1 times [2020-11-22 12:47:41,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:47:41,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986883660] [2020-11-22 12:47:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:47:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:47:41,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:47:41,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:47:41,250 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 12:47:41,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:47:41,253 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 12:47:41,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986883660] [2020-11-22 12:47:41,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:47:41,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 12:47:41,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371095834] [2020-11-22 12:47:41,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:47:41,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:47:41,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:47:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:47:41,256 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-11-22 12:47:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:47:41,325 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-22 12:47:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:47:41,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:47:41,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:47:41,328 INFO L225 Difference]: With dead ends: 19 [2020-11-22 12:47:41,328 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 12:47:41,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:47:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 12:47:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 12:47:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:47:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-22 12:47:41,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 8 [2020-11-22 12:47:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:47:41,331 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-22 12:47:41,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:47:41,331 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-22 12:47:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 12:47:41,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:47:41,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:47:41,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:47:41,535 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:47:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:47:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1842728914, now seen corresponding path program 1 times [2020-11-22 12:47:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:47:41,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457990183] [2020-11-22 12:47:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:47:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:47:41,603 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:47:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:47:41,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:47:41,672 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:47:41,672 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:47:41,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:47:41,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:47:41 BoogieIcfgContainer [2020-11-22 12:47:41,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:47:41,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:47:41,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:47:41,897 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:47:41,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:47:38" (3/4) ... [2020-11-22 12:47:41,900 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:47:41,961 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9f781eb3-7304-44f5-9635-843e41a16568/bin/utaipan/witness.graphml [2020-11-22 12:47:41,962 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:47:41,964 INFO L168 Benchmark]: Toolchain (without parser) took 4355.82 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 48.3 MB in the beginning and 58.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:41,967 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 43.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:41,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 887.85 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 49.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:41,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.81 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:41,970 INFO L168 Benchmark]: Boogie Preprocessor took 50.93 ms. Allocated memory is still 71.3 MB. Free memory was 47.5 MB in the beginning and 46.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:41,970 INFO L168 Benchmark]: RCFGBuilder took 387.26 ms. Allocated memory is still 71.3 MB. Free memory was 45.8 MB in the beginning and 30.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:41,971 INFO L168 Benchmark]: TraceAbstraction took 2903.36 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 30.5 MB in the beginning and 60.2 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:47:41,971 INFO L168 Benchmark]: Witness Printer took 64.61 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:47:41,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 43.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 887.85 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 49.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.81 ms. Allocated memory is still 71.3 MB. Free memory was 49.6 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.93 ms. Allocated memory is still 71.3 MB. Free memory was 47.5 MB in the beginning and 46.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 387.26 ms. Allocated memory is still 71.3 MB. Free memory was 45.8 MB in the beginning and 30.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2903.36 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 30.5 MB in the beginning and 60.2 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 64.61 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 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: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={3:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [a8={0:0}, ldv_global_msg_list={3:0}] [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L762] COND TRUE \read(*a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] [L762] free(a8) [L762] COND TRUE \read(*a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 105 SDslu, 44 SDs, 0 SdLazy, 109 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, 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, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 1360 SizeOfPredicates, 11 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...