./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_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:16,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:16,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:16,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:16,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:16,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:16,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:16,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:16,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:16,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:16,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:16,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:16,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:16,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:16,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:16,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:16,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:16,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:16,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:16,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:16,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:16,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:16,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:16,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:16,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:16,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:16,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:16,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:16,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:16,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:16,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:16,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:16,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:16,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:16,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:16,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:16,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:16,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:16,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:16,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:16,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:16,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-28 07:41:16,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:16,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:16,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:16,975 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:16,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:16,975 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:16,976 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:41:16,976 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:16,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:16,976 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:41:16,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:41:16,976 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:16,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:41:16,977 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:41:16,977 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:41:16,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:41:16,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:41:16,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:16,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:16,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:41:16,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:16,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:16,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:16,980 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:41:16,980 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:41:16,980 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:41:16,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:16,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:16,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:16,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:16,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:16,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:16,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:16,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:16,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:16,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:16,987 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:41:16,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:41:16,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:16,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:16,991 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_dd267180-f451-4f88-aba4-8703d4848ede/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a252c986c7b06f14f3ee394685573049ad76fb [2020-11-28 07:41:17,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:17,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:17,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:17,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:17,324 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:17,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-28 07:41:17,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/a54dbc9b0/66ebf0c0abd143f483e6aca20024346b/FLAGa714edc9c [2020-11-28 07:41:18,050 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:18,051 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-28 07:41:18,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/a54dbc9b0/66ebf0c0abd143f483e6aca20024346b/FLAGa714edc9c [2020-11-28 07:41:18,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/a54dbc9b0/66ebf0c0abd143f483e6aca20024346b [2020-11-28 07:41:18,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:18,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:18,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:18,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:18,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:18,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:18" (1/1) ... [2020-11-28 07:41:18,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52894bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:18, skipping insertion in model container [2020-11-28 07:41:18,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:18" (1/1) ... [2020-11-28 07:41:18,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:18,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:18,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:18,982 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) [2020-11-28 07:41:18,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d63dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:18, skipping insertion in model container [2020-11-28 07:41:18,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:18,983 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:41:18,986 INFO L168 Benchmark]: Toolchain (without parser) took 547.99 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:18,988 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 58.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:18,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.76 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:18,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 58.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 545.76 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 70.5 MB in the end (delta: 2.1 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: 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 [2020-11-28 07:41:21,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:41:21,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:41:21,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:41:21,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:41:21,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:41:21,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:41:21,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:41:21,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:41:21,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:41:21,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:41:21,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:41:21,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:41:21,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:41:21,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:41:21,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:41:21,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:41:21,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:41:21,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:41:21,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:41:21,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:41:21,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:41:21,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:41:21,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:41:21,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:41:21,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:41:21,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:41:21,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:41:21,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:41:21,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:41:21,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:41:21,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:41:21,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:41:21,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:41:21,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:41:21,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:41:21,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:41:21,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:41:21,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:41:21,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:41:21,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:41:21,462 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-28 07:41:21,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:41:21,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:41:21,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:41:21,514 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:41:21,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:41:21,515 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:41:21,515 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:41:21,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:41:21,515 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:41:21,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:41:21,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:41:21,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:41:21,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:41:21,518 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:41:21,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:41:21,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:41:21,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:41:21,519 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:41:21,519 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:41:21,520 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:41:21,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:41:21,520 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:41:21,520 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:41:21,520 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:41:21,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:41:21,521 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:41:21,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:41:21,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:41:21,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:41:21,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:41:21,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:41:21,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:41:21,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:41:21,523 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:41:21,523 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:41:21,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:41:21,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:41:21,524 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_dd267180-f451-4f88-aba4-8703d4848ede/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a252c986c7b06f14f3ee394685573049ad76fb [2020-11-28 07:41:21,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:41:21,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:41:21,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:41:21,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:41:21,977 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:41:21,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-28 07:41:22,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/2c5557634/10afc7bf6c5b46199c33d368fb5a5e2c/FLAGc3d1028e5 [2020-11-28 07:41:22,715 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:41:22,716 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2020-11-28 07:41:22,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/2c5557634/10afc7bf6c5b46199c33d368fb5a5e2c/FLAGc3d1028e5 [2020-11-28 07:41:22,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/data/2c5557634/10afc7bf6c5b46199c33d368fb5a5e2c [2020-11-28 07:41:22,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:41:22,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:41:22,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:22,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:41:22,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:41:22,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:22" (1/1) ... [2020-11-28 07:41:22,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2015ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:22, skipping insertion in model container [2020-11-28 07:41:22,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:41:22" (1/1) ... [2020-11-28 07:41:22,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:41:23,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:23,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:23,475 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:41:23,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:41:23,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:23,589 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:41:23,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:41:23,767 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:41:23,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23 WrapperNode [2020-11-28 07:41:23,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:41:23,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:23,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:41:23,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:41:23,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:41:23,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:41:23,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:41:23,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:41:23,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... [2020-11-28 07:41:23,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:41:23,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:41:23,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:41:23,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:41:23,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:23,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:41:23,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:41:23,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:41:23,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-28 07:41:23,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:41:23,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:41:24,363 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:41:24,364 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 07:41:24,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:24 BoogieIcfgContainer [2020-11-28 07:41:24,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:41:24,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:41:24,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:41:24,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:41:24,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:41:22" (1/3) ... [2020-11-28 07:41:24,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1644f6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:24, skipping insertion in model container [2020-11-28 07:41:24,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:41:23" (2/3) ... [2020-11-28 07:41:24,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1644f6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:41:24, skipping insertion in model container [2020-11-28 07:41:24,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:24" (3/3) ... [2020-11-28 07:41:24,382 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2020-11-28 07:41:24,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:41:24,398 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 07:41:24,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 07:41:24,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:41:24,442 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:41:24,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:41:24,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:41:24,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:41:24,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:41:24,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:41:24,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:41:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 07:41:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:41:24,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:24,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:41:24,467 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]=== [2020-11-28 07:41:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash 889508744, now seen corresponding path program 1 times [2020-11-28 07:41:24,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:24,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029839793] [2020-11-28 07:41:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:24,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:41:24,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:24,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:24,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029839793] [2020-11-28 07:41:24,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:24,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:41:24,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598074450] [2020-11-28 07:41:24,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:24,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:24,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:24,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:24,707 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-11-28 07:41:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:24,775 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-11-28 07:41:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:24,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:41:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:24,787 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:41:24,787 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 07:41:24,789 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 [2020-11-28 07:41:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 07:41:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 07:41:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 07:41:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-28 07:41:24,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2020-11-28 07:41:24,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:24,821 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-28 07:41:24,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-28 07:41:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:41:24,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:24,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:25,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:41:25,043 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]=== [2020-11-28 07:41:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1804967335, now seen corresponding path program 1 times [2020-11-28 07:41:25,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:25,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857226393] [2020-11-28 07:41:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:25,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:41:25,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:25,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:25,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857226393] [2020-11-28 07:41:25,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:25,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-28 07:41:25,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964959533] [2020-11-28 07:41:25,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:41:25,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:25,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:41:25,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:41:25,243 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 7 states. [2020-11-28 07:41:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:25,486 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-28 07:41:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:41:25,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-28 07:41:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:25,488 INFO L225 Difference]: With dead ends: 31 [2020-11-28 07:41:25,488 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:41:25,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:41:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:41:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-11-28 07:41:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:41:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 07:41:25,498 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 7 [2020-11-28 07:41:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:25,499 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 07:41:25,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:41:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 07:41:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:41:25,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:25,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:25,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:41:25,706 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]=== [2020-11-28 07:41:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:25,707 INFO L82 PathProgramCache]: Analyzing trace with hash 119412586, now seen corresponding path program 1 times [2020-11-28 07:41:25,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:25,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895402072] [2020-11-28 07:41:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:25,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:41:25,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:25,812 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 [2020-11-28 07:41:25,813 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:41:25,824 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:41:25,824 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 07:41:25,824 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-28 07:41:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:25,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:25,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895402072] [2020-11-28 07:41:25,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:25,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:41:25,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157995103] [2020-11-28 07:41:25,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:25,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:25,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:25,867 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-11-28 07:41:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:25,942 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-11-28 07:41:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:25,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:41:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:25,944 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:41:25,944 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:41:25,944 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 [2020-11-28 07:41:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:41:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:41:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:41:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-28 07:41:25,948 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2020-11-28 07:41:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:25,948 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-28 07:41:25,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-28 07:41:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:41:25,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:25,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:26,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:41:26,150 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]=== [2020-11-28 07:41:26,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:26,151 INFO L82 PathProgramCache]: Analyzing trace with hash 176927092, now seen corresponding path program 1 times [2020-11-28 07:41:26,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:26,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990216681] [2020-11-28 07:41:26,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:26,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:41:26,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:26,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:26,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990216681] [2020-11-28 07:41:26,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:26,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:41:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645002978] [2020-11-28 07:41:26,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:41:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:41:26,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:41:26,231 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-11-28 07:41:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:26,268 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-28 07:41:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:41:26,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 07:41:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:26,270 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:41:26,270 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:41:26,271 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 [2020-11-28 07:41:26,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:41:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-11-28 07:41:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:41:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-28 07:41:26,274 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2020-11-28 07:41:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:26,275 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-28 07:41:26,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:41:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-28 07:41:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:41:26,276 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:26,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:26,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:41:26,491 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]=== [2020-11-28 07:41:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:26,492 INFO L82 PathProgramCache]: Analyzing trace with hash 176670888, now seen corresponding path program 1 times [2020-11-28 07:41:26,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:26,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163659333] [2020-11-28 07:41:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:41:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:41:26,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:41:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:26,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:41:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:41:26,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163659333] [2020-11-28 07:41:26,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:41:26,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:41:26,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3471445] [2020-11-28 07:41:26,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:41:26,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:41:26,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:41:26,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:41:26,585 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-11-28 07:41:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:41:26,650 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-28 07:41:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:41:26,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 07:41:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:41:26,653 INFO L225 Difference]: With dead ends: 19 [2020-11-28 07:41:26,653 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:41:26,653 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 [2020-11-28 07:41:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:41:26,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:41:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:41:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 07:41:26,656 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 8 [2020-11-28 07:41:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:41:26,656 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 07:41:26,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:41:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 07:41:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:41:26,657 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:41:26,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:41:26,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:41:26,858 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]=== [2020-11-28 07:41:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:41:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1842728914, now seen corresponding path program 1 times [2020-11-28 07:41:26,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:41:26,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641236114] [2020-11-28 07:41:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/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 [2020-11-28 07:41:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:41:26,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:41:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:41:26,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:41:26,990 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:41:26,993 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:41:27,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:41:27,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:41:27 BoogieIcfgContainer [2020-11-28 07:41:27,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:41:27,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:41:27,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:41:27,240 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:41:27,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:41:24" (3/4) ... [2020-11-28 07:41:27,243 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:41:27,318 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dd267180-f451-4f88-aba4-8703d4848ede/bin/utaipan/witness.graphml [2020-11-28 07:41:27,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:41:27,320 INFO L168 Benchmark]: Toolchain (without parser) took 4363.91 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 38.5 MB in the beginning and 54.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,324 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:41:27,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.81 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 38.3 MB in the beginning and 58.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.79 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 56.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,327 INFO L168 Benchmark]: Boogie Preprocessor took 57.15 ms. Allocated memory is still 88.1 MB. Free memory was 55.8 MB in the beginning and 54.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,327 INFO L168 Benchmark]: RCFGBuilder took 481.18 ms. Allocated memory is still 88.1 MB. Free memory was 54.8 MB in the beginning and 65.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,328 INFO L168 Benchmark]: TraceAbstraction took 2868.43 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 56.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,332 INFO L168 Benchmark]: Witness Printer took 79.03 ms. Allocated memory is still 88.1 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:41:27,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 44.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 811.81 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 38.3 MB in the beginning and 58.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.79 ms. Allocated memory is still 88.1 MB. Free memory was 58.2 MB in the beginning and 56.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.15 ms. Allocated memory is still 88.1 MB. Free memory was 55.8 MB in the beginning and 54.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 481.18 ms. Allocated memory is still 88.1 MB. Free memory was 54.8 MB in the beginning and 65.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2868.43 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 56.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Witness Printer took 79.03 ms. Allocated memory is still 88.1 MB. Free memory was 56.4 MB in the beginning and 54.3 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, 0.2s 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, 0.0s 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...