./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 ca8443f02e84c43442a8563176ea0a68cc82ac31 ............................................................................................................................................ 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_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 ca8443f02e84c43442a8563176ea0a68cc82ac31 .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-09 16:59:45,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:59:45,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:59:46,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:59:46,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:59:46,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:59:46,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:59:46,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:59:46,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:59:46,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:59:46,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:59:46,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:59:46,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:59:46,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:59:46,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:59:46,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:59:46,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:59:46,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:59:46,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:59:46,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:59:46,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:59:46,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:59:46,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:59:46,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:59:46,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:59:46,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:59:46,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:59:46,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:59:46,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:59:46,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:59:46,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:59:46,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:59:46,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:59:46,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:59:46,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:59:46,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:59:46,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:59:46,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:59:46,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:59:46,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:59:46,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:59:46,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 16:59:46,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:59:46,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:59:46,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:59:46,059 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:59:46,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:59:46,059 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:59:46,059 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:59:46,059 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:59:46,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:59:46,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:59:46,060 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:59:46,060 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:59:46,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:59:46,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:59:46,060 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:59:46,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 16:59:46,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:59:46,061 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:59:46,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:59:46,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:59:46,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:59:46,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:59:46,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:59:46,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:59:46,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:59:46,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:59:46,063 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_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8443f02e84c43442a8563176ea0a68cc82ac31 [2020-12-09 16:59:46,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:59:46,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:59:46,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:59:46,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:59:46,261 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:59:46,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-12-09 16:59:46,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/61e0da553/735bb4b97f1c4612878187fadbf74e60/FLAGaaa33ae6d [2020-12-09 16:59:46,717 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:59:46,717 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-12-09 16:59:46,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/61e0da553/735bb4b97f1c4612878187fadbf74e60/FLAGaaa33ae6d [2020-12-09 16:59:47,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/61e0da553/735bb4b97f1c4612878187fadbf74e60 [2020-12-09 16:59:47,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:59:47,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:59:47,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:59:47,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:59:47,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:59:47,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:59:47" (1/1) ... [2020-12-09 16:59:47,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cbe509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:47, skipping insertion in model container [2020-12-09 16:59:47,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:59:47" (1/1) ... [2020-12-09 16:59:47,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:59:47,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:59:47,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:59:47,429 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) [2020-12-09 16:59:47,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@217069e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:47, skipping insertion in model container [2020-12-09 16:59:47,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:59:47,430 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 16:59:47,432 INFO L168 Benchmark]: Toolchain (without parser) took 340.40 ms. Allocated memory is still 96.5 MB. Free memory was 53.8 MB in the beginning and 66.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,432 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 71.5 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:59:47,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.71 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 66.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:47,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 71.5 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.71 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 66.7 MB in the end (delta: -13.0 MB). Peak memory consumption was 9.6 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 0.2.0-7b2dab5 [2020-12-09 16:59:48,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:59:48,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:59:48,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:59:48,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:59:48,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:59:48,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:59:48,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:59:48,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:59:48,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:59:48,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:59:48,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:59:48,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:59:48,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:59:48,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:59:48,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:59:48,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:59:48,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:59:48,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:59:48,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:59:48,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:59:48,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:59:48,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:59:48,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:59:48,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:59:48,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:59:48,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:59:48,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:59:48,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:59:48,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:59:48,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:59:48,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:59:48,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:59:48,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:59:48,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:59:48,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:59:48,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:59:48,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:59:48,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:59:48,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:59:48,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:59:48,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 16:59:48,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:59:48,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:59:48,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:59:48,932 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:59:48,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:59:48,932 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:59:48,932 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:59:48,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:59:48,933 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:59:48,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 16:59:48,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 16:59:48,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:59:48,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 16:59:48,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:59:48,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 16:59:48,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:59:48,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:59:48,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:59:48,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:59:48,936 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 16:59:48,936 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 16:59:48,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:59:48,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:59:48,937 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_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8443f02e84c43442a8563176ea0a68cc82ac31 [2020-12-09 16:59:49,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:59:49,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:59:49,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:59:49,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:59:49,181 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:59:49,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-12-09 16:59:49,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/6e2f76afe/4f618cd4fa644cb8a37e2495f78a29c4/FLAGb8dd7f520 [2020-12-09 16:59:49,665 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:59:49,666 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-12-09 16:59:49,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/6e2f76afe/4f618cd4fa644cb8a37e2495f78a29c4/FLAGb8dd7f520 [2020-12-09 16:59:49,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/data/6e2f76afe/4f618cd4fa644cb8a37e2495f78a29c4 [2020-12-09 16:59:49,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:59:49,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:59:49,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:59:49,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:59:49,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:59:49,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:59:49" (1/1) ... [2020-12-09 16:59:49,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443dcf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:49, skipping insertion in model container [2020-12-09 16:59:49,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:59:49" (1/1) ... [2020-12-09 16:59:49,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:59:49,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:59:49,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:59:50,010 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 16:59:50,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:59:50,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:59:50,058 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:59:50,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:59:50,159 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:59:50,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50 WrapperNode [2020-12-09 16:59:50,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:59:50,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:59:50,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:59:50,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:59:50,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:59:50,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:59:50,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:59:50,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:59:50,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... [2020-12-09 16:59:50,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:59:50,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:59:50,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:59:50,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:59:50,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 [2020-12-09 16:59:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 16:59:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:59:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 16:59:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 16:59:50,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:59:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:59:50,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:59:50,427 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 16:59:50,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:59:50 BoogieIcfgContainer [2020-12-09 16:59:50,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:59:50,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:59:50,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:59:50,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:59:50,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:59:49" (1/3) ... [2020-12-09 16:59:50,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4012a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:59:50, skipping insertion in model container [2020-12-09 16:59:50,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:59:50" (2/3) ... [2020-12-09 16:59:50,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4012a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:59:50, skipping insertion in model container [2020-12-09 16:59:50,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:59:50" (3/3) ... [2020-12-09 16:59:50,440 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test1-2.i [2020-12-09 16:59:50,453 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:59:50,455 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 16:59:50,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 16:59:50,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:59:50,483 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 16:59:50,483 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:59:50,483 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:59:50,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:59:50,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:59:50,484 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:59:50,484 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:59:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-09 16:59:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 16:59:50,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:59:50,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 16:59:50,501 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]=== [2020-12-09 16:59:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:59:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash 28693827, now seen corresponding path program 1 times [2020-12-09 16:59:50,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:59:50,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043859500] [2020-12-09 16:59:50,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 [2020-12-09 16:59:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:59:50,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:59:50,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:59:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:59:50,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 16:59:50,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043859500] [2020-12-09 16:59:50,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:59:50,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:59:50,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745794636] [2020-12-09 16:59:50,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:59:50,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 16:59:50,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:59:50,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:59:50,639 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-12-09 16:59:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:59:50,668 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-09 16:59:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:59:50,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 16:59:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:59:50,675 INFO L225 Difference]: With dead ends: 18 [2020-12-09 16:59:50,675 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 16:59:50,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:59:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 16:59:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 16:59:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 16:59:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 16:59:50,696 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 5 [2020-12-09 16:59:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:59:50,696 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 16:59:50,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:59:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 16:59:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 16:59:50,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:59:50,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 16:59:50,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 16:59:50,898 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]=== [2020-12-09 16:59:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:59:50,899 INFO L82 PathProgramCache]: Analyzing trace with hash 889508680, now seen corresponding path program 1 times [2020-12-09 16:59:50,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:59:50,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912587839] [2020-12-09 16:59:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 [2020-12-09 16:59:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:59:50,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 16:59:50,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:59:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:59:50,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 16:59:50,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912587839] [2020-12-09 16:59:50,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:59:50,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:59:50,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286627783] [2020-12-09 16:59:50,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:59:50,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 16:59:50,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:59:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:59:50,975 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-12-09 16:59:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:59:51,042 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-12-09 16:59:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:59:51,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 16:59:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:59:51,044 INFO L225 Difference]: With dead ends: 27 [2020-12-09 16:59:51,044 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 16:59:51,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:59:51,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 16:59:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-12-09 16:59:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 16:59:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-09 16:59:51,047 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2020-12-09 16:59:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:59:51,048 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-09 16:59:51,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:59:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-09 16:59:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 16:59:51,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:59:51,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 16:59:51,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 16:59:51,250 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]=== [2020-12-09 16:59:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:59:51,253 INFO L82 PathProgramCache]: Analyzing trace with hash 889568262, now seen corresponding path program 1 times [2020-12-09 16:59:51,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:59:51,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249065133] [2020-12-09 16:59:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 [2020-12-09 16:59:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:59:51,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:59:51,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:59:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:59:51,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 16:59:51,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249065133] [2020-12-09 16:59:51,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:59:51,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:59:51,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498272650] [2020-12-09 16:59:51,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:59:51,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 16:59:51,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:59:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:59:51,430 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-12-09 16:59:51,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:59:51,478 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 16:59:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:59:51,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 16:59:51,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:59:51,480 INFO L225 Difference]: With dead ends: 23 [2020-12-09 16:59:51,480 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 16:59:51,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:59:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 16:59:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-12-09 16:59:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 16:59:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-09 16:59:51,484 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 6 [2020-12-09 16:59:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:59:51,485 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-09 16:59:51,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:59:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-09 16:59:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 16:59:51,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:59:51,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:59:51,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 16:59:51,687 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]=== [2020-12-09 16:59:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:59:51,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965349, now seen corresponding path program 1 times [2020-12-09 16:59:51,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:59:51,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568983347] [2020-12-09 16:59:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 [2020-12-09 16:59:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:59:51,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 16:59:51,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 16:59:51,794 INFO L382 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 [2020-12-09 16:59:51,795 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 16:59:51,798 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 16:59:51,799 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 16:59:51,799 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 16:59:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:59:51,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 16:59:51,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568983347] [2020-12-09 16:59:51,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:59:51,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:59:51,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035795941] [2020-12-09 16:59:51,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:59:51,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 16:59:51,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:59:51,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:59:51,817 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 4 states. [2020-12-09 16:59:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:59:51,847 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-09 16:59:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 16:59:51,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 16:59:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:59:51,848 INFO L225 Difference]: With dead ends: 20 [2020-12-09 16:59:51,848 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 16:59:51,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:59:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 16:59:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 16:59:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 16:59:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-09 16:59:51,850 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-12-09 16:59:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:59:51,850 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-09 16:59:51,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:59:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-09 16:59:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:59:51,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:59:51,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:59:52,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 16:59:52,053 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]=== [2020-12-09 16:59:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:59:52,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787124, now seen corresponding path program 1 times [2020-12-09 16:59:52,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 16:59:52,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609258237] [2020-12-09 16:59:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/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 [2020-12-09 16:59:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:59:52,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:59:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 16:59:52,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 16:59:52,198 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 16:59:52,199 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 16:59:52,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 16:59:52,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:59:52 BoogieIcfgContainer [2020-12-09 16:59:52,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:59:52,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:59:52,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:59:52,426 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:59:52,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:59:50" (3/4) ... [2020-12-09 16:59:52,429 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 16:59:52,471 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bce1bc5c-2c5c-414e-89c1-450a233fdfa2/bin/utaipan/witness.graphml [2020-12-09 16:59:52,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:59:52,472 INFO L168 Benchmark]: Toolchain (without parser) took 2781.63 ms. Allocated memory was 56.6 MB in the beginning and 94.4 MB in the end (delta: 37.7 MB). Free memory was 34.5 MB in the beginning and 43.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,472 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:59:52,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.10 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.3 MB in the beginning and 49.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.90 ms. Allocated memory is still 77.6 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,474 INFO L168 Benchmark]: Boogie Preprocessor took 18.78 ms. Allocated memory is still 77.6 MB. Free memory was 47.0 MB in the beginning and 45.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,475 INFO L168 Benchmark]: RCFGBuilder took 215.48 ms. Allocated memory is still 77.6 MB. Free memory was 45.6 MB in the beginning and 30.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,475 INFO L168 Benchmark]: TraceAbstraction took 1994.85 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 30.5 MB in the beginning and 45.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,476 INFO L168 Benchmark]: Witness Printer took 44.89 ms. Allocated memory is still 94.4 MB. Free memory was 45.6 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:59:52,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 39.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 469.10 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 34.3 MB in the beginning and 49.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.90 ms. Allocated memory is still 77.6 MB. Free memory was 49.1 MB in the beginning and 47.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.78 ms. Allocated memory is still 77.6 MB. Free memory was 47.0 MB in the beginning and 45.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 215.48 ms. Allocated memory is still 77.6 MB. Free memory was 45.6 MB in the beginning and 30.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1994.85 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 30.5 MB in the beginning and 45.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. * Witness Printer took 44.89 ms. Allocated memory is still 94.4 MB. Free memory was 45.6 MB in the beginning and 43.5 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: 760]: 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) }; VAL [ldv_global_msg_list={3:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] free(p) VAL [ldv_global_msg_list={3:0}] [L759] free(p) VAL [ldv_global_msg_list={3:0}] [L759] free(p) [L760] free(p) VAL [ldv_global_msg_list={3:0}] [L760] free(p) VAL [ldv_global_msg_list={3:0}] [L760] free(p) VAL [ldv_global_msg_list={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 98 SDslu, 33 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 497 SizeOfPredicates, 7 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...