./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/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_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/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-a4ecdab [2020-11-22 12:52:32,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:52:32,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:52:32,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:52:32,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:52:32,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:52:32,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:52:32,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:52:32,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:52:32,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:52:32,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:52:32,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:52:32,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:52:32,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:52:32,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:52:32,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:52:32,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:52:32,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:52:32,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:52:32,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:52:32,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:52:32,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:52:32,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:52:32,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:52:32,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:52:32,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:52:32,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:52:32,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:52:32,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:52:32,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:52:32,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:52:32,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:52:32,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:52:32,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:52:32,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:52:32,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:52:32,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:52:32,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:52:32,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:52:32,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:52:32,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:52:32,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 12:52:32,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:52:32,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:52:32,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:52:32,817 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:52:32,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:52:32,818 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:52:32,818 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:52:32,818 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:52:32,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:52:32,819 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:52:32,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:52:32,820 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:52:32,820 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:52:32,820 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:52:32,821 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:52:32,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:52:32,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:52:32,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:52:32,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:52:32,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:52:32,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:52:32,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:52:32,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:52:32,823 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:52:32,823 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:52:32,823 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:52:32,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:52:32,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:52:32,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:52:32,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:52:32,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:52:32,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:52:32,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:52:32,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:52:32,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:52:32,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:52:32,825 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:52:32,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:52:32,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:52:32,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:52:32,825 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_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8443f02e84c43442a8563176ea0a68cc82ac31 [2020-11-22 12:52:33,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:52:33,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:52:33,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:52:33,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:52:33,131 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:52:33,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-11-22 12:52:33,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/ccbf8a4bb/f765c1475b0d4556ab5938338b73dcbb/FLAGd564d420d [2020-11-22 12:52:33,797 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:52:33,798 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-11-22 12:52:33,826 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/ccbf8a4bb/f765c1475b0d4556ab5938338b73dcbb/FLAGd564d420d [2020-11-22 12:52:34,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/ccbf8a4bb/f765c1475b0d4556ab5938338b73dcbb [2020-11-22 12:52:34,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:52:34,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:52:34,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:34,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:52:34,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:52:34,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:34" (1/1) ... [2020-11-22 12:52:34,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b40e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:34, skipping insertion in model container [2020-11-22 12:52:34,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:34" (1/1) ... [2020-11-22 12:52:34,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:52:34,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:34,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:34,650 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-22 12:52:34,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@264422b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:34, skipping insertion in model container [2020-11-22 12:52:34,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:34,653 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:52:34,656 INFO L168 Benchmark]: Toolchain (without parser) took 604.49 ms. Allocated memory is still 86.0 MB. Free memory was 52.8 MB in the beginning and 60.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:34,658 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:34,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.33 ms. Allocated memory is still 86.0 MB. Free memory was 52.7 MB in the beginning and 60.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:34,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 600.33 ms. Allocated memory is still 86.0 MB. Free memory was 52.7 MB in the beginning and 60.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:52:37,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:52:37,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:52:37,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:52:37,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:52:37,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:52:37,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:52:37,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:52:37,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:52:37,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:52:37,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:52:37,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:52:37,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:52:37,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:52:37,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:52:37,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:52:37,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:52:37,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:52:37,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:52:37,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:52:37,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:52:37,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:52:37,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:52:37,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:52:37,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:52:37,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:52:37,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:52:37,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:52:37,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:52:37,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:52:37,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:52:37,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:52:37,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:52:37,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:52:37,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:52:37,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:52:37,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:52:37,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:52:37,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:52:37,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:52:37,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:52:37,192 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 12:52:37,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:52:37,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:52:37,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:52:37,237 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:52:37,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:52:37,237 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:52:37,238 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:52:37,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:52:37,238 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:52:37,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 12:52:37,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 12:52:37,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:52:37,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:52:37,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:52:37,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:52:37,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:52:37,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:52:37,242 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 12:52:37,242 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 12:52:37,243 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 12:52:37,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:52:37,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:52:37,243 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:52:37,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:52:37,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:52:37,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:52:37,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:52:37,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:52:37,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:52:37,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:52:37,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:52:37,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:52:37,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:52:37,256 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:52:37,257 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:52:37,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:52:37,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:52:37,257 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_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8443f02e84c43442a8563176ea0a68cc82ac31 [2020-11-22 12:52:37,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:52:37,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:52:37,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:52:37,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:52:37,669 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:52:37,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-11-22 12:52:37,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/464895a87/edd9a711156048b9bde99c6fb918dc84/FLAG9c6809b67 [2020-11-22 12:52:38,307 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:52:38,308 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2020-11-22 12:52:38,333 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/464895a87/edd9a711156048b9bde99c6fb918dc84/FLAG9c6809b67 [2020-11-22 12:52:38,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/data/464895a87/edd9a711156048b9bde99c6fb918dc84 [2020-11-22 12:52:38,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:52:38,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:52:38,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:38,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:52:38,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:52:38,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:38" (1/1) ... [2020-11-22 12:52:38,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2557d100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:38, skipping insertion in model container [2020-11-22 12:52:38,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:52:38" (1/1) ... [2020-11-22 12:52:38,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:52:38,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:39,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:39,152 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:52:39,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:52:39,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:39,249 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:52:39,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:52:39,432 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:52:39,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39 WrapperNode [2020-11-22 12:52:39,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:52:39,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:52:39,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:52:39,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:52:39,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:52:39,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:52:39,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:52:39,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:52:39,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... [2020-11-22 12:52:39,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:52:39,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:52:39,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:52:39,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:52:39,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:52:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 12:52:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:52:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:52:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-22 12:52:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:52:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:52:40,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:52:40,101 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-22 12:52:40,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:40 BoogieIcfgContainer [2020-11-22 12:52:40,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:52:40,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:52:40,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:52:40,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:52:40,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:52:38" (1/3) ... [2020-11-22 12:52:40,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2579da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:52:40, skipping insertion in model container [2020-11-22 12:52:40,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:52:39" (2/3) ... [2020-11-22 12:52:40,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2579da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:52:40, skipping insertion in model container [2020-11-22 12:52:40,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:40" (3/3) ... [2020-11-22 12:52:40,117 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test1-2.i [2020-11-22 12:52:40,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:52:40,132 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-22 12:52:40,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-22 12:52:40,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:52:40,175 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 12:52:40,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:52:40,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:52:40,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:52:40,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:52:40,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:52:40,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:52:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-22 12:52:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:52:40,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:40,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:52:40,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:52:40,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:40,209 INFO L82 PathProgramCache]: Analyzing trace with hash 28693827, now seen corresponding path program 1 times [2020-11-22 12:52:40,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:40,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100217810] [2020-11-22 12:52:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 12:52:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:52:40,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:40,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:40,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100217810] [2020-11-22 12:52:40,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:40,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:52:40,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381406630] [2020-11-22 12:52:40,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:52:40,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:40,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:52:40,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:52:40,569 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-22 12:52:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:40,627 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-22 12:52:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:52:40,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 12:52:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:40,640 INFO L225 Difference]: With dead ends: 18 [2020-11-22 12:52:40,640 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 12:52:40,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:52:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 12:52:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 12:52:40,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 12:52:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 12:52:40,674 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 5 [2020-11-22 12:52:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:40,674 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 12:52:40,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:52:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 12:52:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:52:40,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:40,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:52:40,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:52:40,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:52:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:40,888 INFO L82 PathProgramCache]: Analyzing trace with hash 889508680, now seen corresponding path program 1 times [2020-11-22 12:52:40,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:40,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303236218] [2020-11-22 12:52:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 12:52:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:40,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 12:52:40,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:41,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:41,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303236218] [2020-11-22 12:52:41,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:41,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2020-11-22 12:52:41,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772599781] [2020-11-22 12:52:41,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 12:52:41,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:41,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 12:52:41,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:52:41,066 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2020-11-22 12:52:41,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:41,335 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-11-22 12:52:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:52:41,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-11-22 12:52:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:41,336 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:52:41,336 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 12:52:41,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:52:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 12:52:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 14. [2020-11-22 12:52:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-22 12:52:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-22 12:52:41,340 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 6 [2020-11-22 12:52:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:41,341 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-22 12:52:41,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 12:52:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-22 12:52:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:52:41,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:41,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:41,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:52:41,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:52:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965349, now seen corresponding path program 1 times [2020-11-22 12:52:41,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:41,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375541993] [2020-11-22 12:52:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 12:52:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:41,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:52:41,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:41,649 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 12:52:41,650 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 12:52:41,660 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 12:52:41,661 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 12:52:41,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 12:52:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:41,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:41,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375541993] [2020-11-22 12:52:41,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:41,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:52:41,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873399228] [2020-11-22 12:52:41,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:52:41,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:52:41,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:52:41,719 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-11-22 12:52:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:41,793 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-22 12:52:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:52:41,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 12:52:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:41,794 INFO L225 Difference]: With dead ends: 18 [2020-11-22 12:52:41,795 INFO L226 Difference]: Without dead ends: 18 [2020-11-22 12:52:41,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:52:41,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-22 12:52:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-22 12:52:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 12:52:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-22 12:52:41,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2020-11-22 12:52:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:41,799 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-22 12:52:41,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:52:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-22 12:52:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:52:41,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:41,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:42,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,007 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:52:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812391, now seen corresponding path program 1 times [2020-11-22 12:52:42,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:42,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254856235] [2020-11-22 12:52:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:42,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:52:42,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:42,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:42,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254856235] [2020-11-22 12:52:42,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:42,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:52:42,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578348507] [2020-11-22 12:52:42,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:52:42,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:52:42,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:52:42,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:52:42,112 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2020-11-22 12:52:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:42,161 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-22 12:52:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:52:42,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 12:52:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:42,163 INFO L225 Difference]: With dead ends: 22 [2020-11-22 12:52:42,163 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 12:52:42,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:52:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 12:52:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-22 12:52:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 12:52:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-22 12:52:42,166 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-11-22 12:52:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:42,166 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-22 12:52:42,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:52:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-22 12:52:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:52:42,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:42,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:42,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,381 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE]=== [2020-11-22 12:52:42,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:42,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1267787124, now seen corresponding path program 1 times [2020-11-22 12:52:42,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:52:42,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228869641] [2020-11-22 12:52:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:52:42,429 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:52:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:52:42,446 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:52:42,479 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:52:42,480 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:52:42,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:52:42,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:52:42 BoogieIcfgContainer [2020-11-22 12:52:42,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:52:42,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:52:42,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:52:42,715 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:52:42,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:52:40" (3/4) ... [2020-11-22 12:52:42,718 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:52:42,779 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4e8cd817-7ebd-47ac-9ff3-8e8b8a64b984/bin/utaipan/witness.graphml [2020-11-22 12:52:42,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:52:42,783 INFO L168 Benchmark]: Toolchain (without parser) took 4167.84 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 49.2 MB in the beginning and 35.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,784 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 67.1 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:42,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.94 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 43.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.74 ms. Allocated memory is still 67.1 MB. Free memory was 43.5 MB in the beginning and 41.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,788 INFO L168 Benchmark]: Boogie Preprocessor took 43.11 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 40.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,789 INFO L168 Benchmark]: RCFGBuilder took 576.69 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 40.2 MB in the beginning and 64.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,789 INFO L168 Benchmark]: TraceAbstraction took 2606.53 ms. Allocated memory is still 83.9 MB. Free memory was 63.6 MB in the beginning and 37.7 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,790 INFO L168 Benchmark]: Witness Printer took 68.10 ms. Allocated memory is still 83.9 MB. Free memory was 37.7 MB in the beginning and 35.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:42,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 67.1 MB. Free memory is still 50.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 816.94 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 43.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.74 ms. Allocated memory is still 67.1 MB. Free memory was 43.5 MB in the beginning and 41.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.11 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 40.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 576.69 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 40.2 MB in the beginning and 64.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2606.53 ms. Allocated memory is still 83.9 MB. Free memory was 63.6 MB in the beginning and 37.7 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.10 ms. Allocated memory is still 83.9 MB. Free memory was 37.7 MB in the beginning and 35.6 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 78 SDslu, 34 SDs, 0 SdLazy, 74 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 797 SizeOfPredicates, 8 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...