./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/lis_unsafe.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_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/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 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 .............................................................................................................................................. 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_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/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 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 ............................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:10,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:10,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:10,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:10,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:10,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:10,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:10,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:10,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:10,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:10,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:10,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:10,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:10,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:10,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:10,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:10,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:10,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:10,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:10,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:10,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:10,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:10,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:10,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:10,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:10,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:10,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:10,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:10,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:10,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:10,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:10,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:10,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:10,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:10,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:10,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:10,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:10,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:10,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:10,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:10,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:10,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-28 07:40:10,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:10,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:10,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:10,786 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:10,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:10,787 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:10,787 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:10,787 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:10,787 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:10,788 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:10,789 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:10,789 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:10,789 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:10,789 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:10,790 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:10,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:40:10,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:40:10,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:10,791 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:10,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:10,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:10,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:10,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:10,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:40:10,793 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:40:10,793 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:40:10,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:10,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:10,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:10,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:10,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:10,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:10,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:10,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:10,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:10,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:10,795 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:10,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:10,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:10,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:10,796 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_bfe8360f-ecac-4829-8b90-741a0bf58cf7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2020-11-28 07:40:11,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:11,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:11,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:11,123 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:11,126 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:11,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-28 07:40:11,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/4703f8f65/0fc77fe2f9cd45448135230ba6cd8adf/FLAG44b2a724b [2020-11-28 07:40:11,888 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:11,889 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-28 07:40:11,913 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/4703f8f65/0fc77fe2f9cd45448135230ba6cd8adf/FLAG44b2a724b [2020-11-28 07:40:12,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/4703f8f65/0fc77fe2f9cd45448135230ba6cd8adf [2020-11-28 07:40:12,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:12,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:12,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:12,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:12,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:12,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:12" (1/1) ... [2020-11-28 07:40:12,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188b784b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:12, skipping insertion in model container [2020-11-28 07:40:12,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:12" (1/1) ... [2020-11-28 07:40:12,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:12,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:12,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:12,553 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-28 07:40:12,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55513cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:12, skipping insertion in model container [2020-11-28 07:40:12,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:12,554 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:40:12,556 INFO L168 Benchmark]: Toolchain (without parser) took 403.11 ms. Allocated memory is still 121.6 MB. Free memory was 90.9 MB in the beginning and 98.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:12,557 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:12,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.01 ms. Allocated memory is still 121.6 MB. Free memory was 90.9 MB in the beginning and 98.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:12,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 41.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 399.01 ms. Allocated memory is still 121.6 MB. Free memory was 90.9 MB in the beginning and 98.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:40:15,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:15,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:15,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:15,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:15,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:15,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:15,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:15,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:15,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:15,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:15,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:15,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:15,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:15,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:15,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:15,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:15,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:15,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:15,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:15,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:15,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:15,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:15,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:15,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:15,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:15,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:15,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:15,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:15,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:15,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:15,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:15,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:15,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:15,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:15,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:15,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:15,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:15,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:15,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:15,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:15,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-28 07:40:15,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:15,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:15,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:15,226 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:15,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:15,227 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:15,227 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:15,227 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:15,227 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:15,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 07:40:15,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 07:40:15,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:15,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:15,231 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 07:40:15,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:15,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:15,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:15,232 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 07:40:15,232 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 07:40:15,232 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 07:40:15,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:15,233 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:15,233 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:40:15,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:40:15,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:15,234 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:15,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:15,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:40:15,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:15,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:15,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:15,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:15,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:15,236 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:40:15,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:40:15,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:15,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:15,237 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_bfe8360f-ecac-4829-8b90-741a0bf58cf7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2020-11-28 07:40:15,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:15,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:15,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:15,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:15,646 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:15,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-28 07:40:15,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/34377354c/f4706acba7b842899835f59312ac09d4/FLAG6c36d9e57 [2020-11-28 07:40:16,448 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:16,453 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-28 07:40:16,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/34377354c/f4706acba7b842899835f59312ac09d4/FLAG6c36d9e57 [2020-11-28 07:40:16,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/data/34377354c/f4706acba7b842899835f59312ac09d4 [2020-11-28 07:40:16,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:16,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:16,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:16,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:16,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:16,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c63291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:16, skipping insertion in model container [2020-11-28 07:40:16,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:16" (1/1) ... [2020-11-28 07:40:16,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:16,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:17,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:17,222 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:40:17,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:17,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:17,340 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:17,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:17,495 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:17,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17 WrapperNode [2020-11-28 07:40:17,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:17,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:17,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:17,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:17,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:17,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:17,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:17,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:17,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... [2020-11-28 07:40:17,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:17,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:17,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:17,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:17,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:40:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:40:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:40:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:40:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:18,549 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:18,549 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:40:18,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:18 BoogieIcfgContainer [2020-11-28 07:40:18,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:18,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:18,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:18,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:18,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:16" (1/3) ... [2020-11-28 07:40:18,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b10a607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:18, skipping insertion in model container [2020-11-28 07:40:18,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:17" (2/3) ... [2020-11-28 07:40:18,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b10a607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:18, skipping insertion in model container [2020-11-28 07:40:18,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:18" (3/3) ... [2020-11-28 07:40:18,559 INFO L111 eAbstractionObserver]: Analyzing ICFG lis_unsafe.i [2020-11-28 07:40:18,571 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:18,576 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-11-28 07:40:18,589 INFO L253 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-11-28 07:40:18,610 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:18,610 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-28 07:40:18,610 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:18,610 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:18,611 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:18,611 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:18,611 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:18,611 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-11-28 07:40:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:18,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:18,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:18,632 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-28 07:40:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:18,638 INFO L82 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2020-11-28 07:40:18,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:18,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008495209] [2020-11-28 07:40:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:18,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:40:18,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:18,849 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-28 07:40:18,849 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-11-28 07:40:18,852 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:40:18,865 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:40:18,867 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 07:40:18,868 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2020-11-28 07:40:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:18,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:18,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008495209] [2020-11-28 07:40:18,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:18,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-28 07:40:18,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922453475] [2020-11-28 07:40:18,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:40:18,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:18,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:40:18,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:18,956 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-11-28 07:40:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:19,273 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-11-28 07:40:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:19,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:40:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:19,286 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:40:19,287 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 07:40:19,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:40:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 07:40:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-28 07:40:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 07:40:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-11-28 07:40:19,336 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 6 [2020-11-28 07:40:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:19,337 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-11-28 07:40:19,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:40:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-11-28 07:40:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:19,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:19,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:19,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:40:19,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-28 07:40:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2020-11-28 07:40:19,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:19,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043238852] [2020-11-28 07:40:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:19,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:40:19,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:40:19,653 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_27|], 1=[|v_#valid_39|]} [2020-11-28 07:40:19,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 07:40:19,663 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-28 07:40:19,663 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:40:19,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:40:19,692 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 07:40:19,693 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 07:40:19,710 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:40:19,712 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-28 07:40:19,713 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:21 [2020-11-28 07:40:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:19,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:40:19,932 INFO L441 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2020-11-28 07:40:19,943 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 07:40:19,948 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:40:19,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:40:19,967 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-28 07:40:19,970 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 07:40:19,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:40:19,989 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 07:40:19,989 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:5 [2020-11-28 07:40:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043238852] [2020-11-28 07:40:20,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:20,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:40:20,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568106872] [2020-11-28 07:40:20,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:40:20,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:40:20,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:40:20,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:40:20,018 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 6 states. [2020-11-28 07:40:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:21,432 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-11-28 07:40:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:40:21,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-28 07:40:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:21,436 INFO L225 Difference]: With dead ends: 156 [2020-11-28 07:40:21,436 INFO L226 Difference]: Without dead ends: 156 [2020-11-28 07:40:21,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:40:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-28 07:40:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 73. [2020-11-28 07:40:21,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 07:40:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-11-28 07:40:21,449 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 6 [2020-11-28 07:40:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:21,449 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-11-28 07:40:21,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:40:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-11-28 07:40:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:40:21,450 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:21,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:40:21,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:40:21,666 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-28 07:40:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2020-11-28 07:40:21,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:40:21,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817250002] [2020-11-28 07:40:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:40:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:21,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:21,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:21,827 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:40:21,827 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:22,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:40:22,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:22 BoogieIcfgContainer [2020-11-28 07:40:22,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:22,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:22,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:22,063 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:22,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:18" (3/4) ... [2020-11-28 07:40:22,065 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:40:22,130 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bfe8360f-ecac-4829-8b90-741a0bf58cf7/bin/utaipan/witness.graphml [2020-11-28 07:40:22,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:22,137 INFO L168 Benchmark]: Toolchain (without parser) took 5403.41 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.2 MB in the beginning and 29.4 MB in the end (delta: -1.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,138 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:22,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.58 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 31.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.61 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 29.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,140 INFO L168 Benchmark]: Boogie Preprocessor took 44.29 ms. Allocated memory is still 62.9 MB. Free memory was 29.5 MB in the beginning and 44.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,141 INFO L168 Benchmark]: RCFGBuilder took 909.79 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 34.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,142 INFO L168 Benchmark]: TraceAbstraction took 3508.07 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 34.0 MB in the beginning and 31.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,142 INFO L168 Benchmark]: Witness Printer took 68.53 ms. Allocated memory is still 75.5 MB. Free memory was 31.2 MB in the beginning and 29.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 763.58 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 31.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.61 ms. Allocated memory is still 62.9 MB. Free memory was 31.6 MB in the beginning and 29.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.29 ms. Allocated memory is still 62.9 MB. Free memory was 29.5 MB in the beginning and 44.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 909.79 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 34.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3508.07 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 34.0 MB in the beginning and 31.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Witness Printer took 68.53 ms. Allocated memory is still 75.5 MB. Free memory was 31.2 MB in the beginning and 29.4 MB in the end (delta: 1.8 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: 518]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L531] int *a; [L532] int N = __VERIFIER_nondet_int(); [L533] COND FALSE !(N < 1) [L514] int *best, *prev, i, j, max = 0; [L515] best = (int*) malloc(sizeof(int) * N) [L516] prev = (int*) malloc(sizeof(int) * N) [L517] i = 0 [L517] COND TRUE i < N [L518] best[i] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 29 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 183 SDslu, 196 SDs, 0 SdLazy, 199 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 2 MinimizatonAttempts, 83 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 4 QuantifiedInterpolants, 850 SizeOfPredicates, 11 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 14 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...