./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 eb6bcc62184a60bbcb9e0528a455aeb84b21f101 ........................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 eb6bcc62184a60bbcb9e0528a455aeb84b21f101 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:13:53,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:13:53,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:13:53,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:13:53,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:13:53,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:13:53,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:13:53,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:13:53,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:13:53,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:13:53,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:13:53,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:13:53,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:13:53,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:13:53,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:13:53,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:13:53,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:13:53,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:13:53,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:13:53,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:13:53,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:13:53,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:13:53,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:13:53,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:13:53,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:13:53,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:13:53,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:13:53,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:13:53,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:13:53,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:13:53,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:13:53,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:13:53,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:13:53,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:13:53,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:13:53,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:13:53,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:13:53,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:13:53,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:13:53,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:13:53,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:13:53,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 16:13:53,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:13:53,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:13:53,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:13:53,639 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:13:53,639 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:13:53,639 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:13:53,640 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:13:53,640 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:13:53,640 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:13:53,640 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:13:53,640 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:13:53,640 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:13:53,640 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:13:53,641 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:13:53,641 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:13:53,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:13:53,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:13:53,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 16:13:53,642 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:13:53,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:13:53,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:13:53,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:13:53,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:13:53,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:13:53,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:13:53,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:13:53,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:13:53,644 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_736ae7a1-0383-4083-8a68-405c9677d466/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 -> eb6bcc62184a60bbcb9e0528a455aeb84b21f101 [2019-12-07 16:13:53,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:13:53,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:13:53,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:13:53,763 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:13:53,764 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:13:53,764 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-12-07 16:13:53,804 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/07646c182/226e00d60d77421c8f1a6b58147adea0/FLAG79366043b [2019-12-07 16:13:54,169 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:13:54,170 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-12-07 16:13:54,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/07646c182/226e00d60d77421c8f1a6b58147adea0/FLAG79366043b [2019-12-07 16:13:54,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/07646c182/226e00d60d77421c8f1a6b58147adea0 [2019-12-07 16:13:54,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:13:54,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:13:54,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:13:54,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:13:54,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:13:54,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:13:54" (1/1) ... [2019-12-07 16:13:54,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d34426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:54, skipping insertion in model container [2019-12-07 16:13:54,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:13:54" (1/1) ... [2019-12-07 16:13:54,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:13:54,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:13:54,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:13:54,510 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) [2019-12-07 16:13:54,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60efe40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:54, skipping insertion in model container [2019-12-07 16:13:54,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:13:54,511 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 16:13:54,512 INFO L168 Benchmark]: Toolchain (without parser) took 317.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:13:54,513 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:13:54,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:13:54,514 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 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 0.1.25-f470102 [2019-12-07 16:13:55,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:13:55,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:13:55,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:13:55,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:13:55,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:13:55,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:13:55,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:13:55,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:13:55,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:13:55,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:13:55,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:13:55,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:13:55,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:13:55,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:13:55,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:13:55,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:13:55,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:13:55,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:13:55,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:13:55,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:13:55,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:13:55,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:13:55,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:13:55,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:13:55,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:13:55,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:13:55,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:13:55,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:13:55,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:13:55,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:13:55,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:13:55,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:13:55,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:13:55,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:13:55,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:13:55,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:13:55,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:13:55,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:13:55,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:13:55,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:13:55,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-12-07 16:13:55,753 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:13:55,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:13:55,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:13:55,755 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:13:55,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:13:55,755 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:13:55,755 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:13:55,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:13:55,756 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:13:55,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:13:55,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:13:55,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:13:55,757 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:13:55,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:13:55,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:13:55,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:13:55,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:13:55,758 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 16:13:55,758 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 16:13:55,758 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 16:13:55,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:13:55,758 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:13:55,759 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 16:13:55,759 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 16:13:55,759 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:13:55,759 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:13:55,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:13:55,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 16:13:55,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:13:55,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:13:55,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:13:55,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:13:55,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:13:55,761 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 16:13:55,761 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 16:13:55,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:13:55,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:13:55,761 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_736ae7a1-0383-4083-8a68-405c9677d466/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 -> eb6bcc62184a60bbcb9e0528a455aeb84b21f101 [2019-12-07 16:13:55,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:13:55,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:13:55,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:13:55,944 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:13:55,945 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:13:55,945 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-12-07 16:13:55,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/816c020d5/7dfb20e32d1d467da50e616abf9d0d83/FLAGa93982568 [2019-12-07 16:13:56,537 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:13:56,537 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2019-12-07 16:13:56,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/816c020d5/7dfb20e32d1d467da50e616abf9d0d83/FLAGa93982568 [2019-12-07 16:13:56,983 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/data/816c020d5/7dfb20e32d1d467da50e616abf9d0d83 [2019-12-07 16:13:56,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:13:56,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:13:56,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:13:56,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:13:56,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:13:56,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:13:56" (1/1) ... [2019-12-07 16:13:56,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5031311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:56, skipping insertion in model container [2019-12-07 16:13:56,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:13:56" (1/1) ... [2019-12-07 16:13:56,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:13:57,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:13:57,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:13:57,278 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 16:13:57,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:13:57,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:13:57,344 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:13:57,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:13:57,428 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:13:57,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57 WrapperNode [2019-12-07 16:13:57,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:13:57,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:13:57,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:13:57,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:13:57,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:13:57,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:13:57,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:13:57,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:13:57,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... [2019-12-07 16:13:57,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:13:57,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:13:57,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:13:57,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:13:57,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 [2019-12-07 16:13:57,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 16:13:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:13:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:13:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-12-07 16:13:57,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:13:57,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:13:57,677 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:13:57,677 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 16:13:57,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:13:57 BoogieIcfgContainer [2019-12-07 16:13:57,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:13:57,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:13:57,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:13:57,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:13:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:13:56" (1/3) ... [2019-12-07 16:13:57,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c13598c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:13:57, skipping insertion in model container [2019-12-07 16:13:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:13:57" (2/3) ... [2019-12-07 16:13:57,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c13598c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:13:57, skipping insertion in model container [2019-12-07 16:13:57,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:13:57" (3/3) ... [2019-12-07 16:13:57,682 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2019-12-07 16:13:57,689 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:13:57,692 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 16:13:57,699 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 16:13:57,711 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:13:57,711 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 16:13:57,711 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:13:57,712 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:13:57,712 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:13:57,712 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:13:57,712 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:13:57,712 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:13:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-07 16:13:57,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:13:57,725 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:13:57,725 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:13:57,726 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 16:13:57,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:13:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash 889509194, now seen corresponding path program 1 times [2019-12-07 16:13:57,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:13:57,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738709793] [2019-12-07 16:13:57,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 [2019-12-07 16:13:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:13:57,787 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:13:57,790 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:13:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:57,813 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:13:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:57,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738709793] [2019-12-07 16:13:57,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:13:57,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 16:13:57,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765073784] [2019-12-07 16:13:57,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:13:57,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:13:57,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:13:57,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:13:57,832 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2019-12-07 16:13:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:13:57,874 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2019-12-07 16:13:57,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 16:13:57,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 16:13:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:13:57,881 INFO L225 Difference]: With dead ends: 53 [2019-12-07 16:13:57,881 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 16:13:57,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:13:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 16:13:57,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 17. [2019-12-07 16:13:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 16:13:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-12-07 16:13:57,904 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2019-12-07 16:13:57,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:13:57,904 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-12-07 16:13:57,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:13:57,905 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-12-07 16:13:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:13:57,905 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:13:57,905 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:13:58,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 16:13:58,107 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 16:13:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:13:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash 889568776, now seen corresponding path program 1 times [2019-12-07 16:13:58,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:13:58,109 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813004392] [2019-12-07 16:13:58,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 [2019-12-07 16:13:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:13:58,231 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 16:13:58,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:13:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:58,253 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:13:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:58,259 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813004392] [2019-12-07 16:13:58,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:13:58,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 16:13:58,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643982949] [2019-12-07 16:13:58,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:13:58,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:13:58,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:13:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:13:58,268 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-12-07 16:13:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:13:58,324 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-12-07 16:13:58,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:13:58,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 16:13:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:13:58,327 INFO L225 Difference]: With dead ends: 26 [2019-12-07 16:13:58,327 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 16:13:58,329 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:13:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 16:13:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2019-12-07 16:13:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 16:13:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-12-07 16:13:58,335 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 6 [2019-12-07 16:13:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:13:58,335 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-12-07 16:13:58,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:13:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-12-07 16:13:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 16:13:58,337 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:13:58,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:13:58,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 16:13:58,538 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 16:13:58,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:13:58,539 INFO L82 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2019-12-07 16:13:58,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:13:58,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33429268] [2019-12-07 16:13:58,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 [2019-12-07 16:13:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:13:58,611 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 16:13:58,612 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:13:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:58,623 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:13:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:58,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33429268] [2019-12-07 16:13:58,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:13:58,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:13:58,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36663197] [2019-12-07 16:13:58,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:13:58,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:13:58,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:13:58,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:13:58,626 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2019-12-07 16:13:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:13:58,647 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-12-07 16:13:58,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:13:58,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 16:13:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:13:58,648 INFO L225 Difference]: With dead ends: 14 [2019-12-07 16:13:58,648 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 16:13:58,648 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:13:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 16:13:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 16:13:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 16:13:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 16:13:58,651 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2019-12-07 16:13:58,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:13:58,651 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 16:13:58,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:13:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 16:13:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:13:58,652 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:13:58,652 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:13:58,853 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 16:13:58,854 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 16:13:58,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:13:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2019-12-07 16:13:58,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:13:58,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822598980] [2019-12-07 16:13:58,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 [2019-12-07 16:13:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:13:58,976 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:13:58,979 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:13:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:59,066 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:13:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:59,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822598980] [2019-12-07 16:13:59,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:13:59,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-12-07 16:13:59,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314482508] [2019-12-07 16:13:59,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 16:13:59,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:13:59,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 16:13:59,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 16:13:59,154 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2019-12-07 16:13:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:13:59,303 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-12-07 16:13:59,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 16:13:59,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-12-07 16:13:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:13:59,304 INFO L225 Difference]: With dead ends: 21 [2019-12-07 16:13:59,304 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 16:13:59,305 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 16:13:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 16:13:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-12-07 16:13:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 16:13:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 16:13:59,308 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-12-07 16:13:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:13:59,308 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 16:13:59,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 16:13:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 16:13:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 16:13:59,309 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:13:59,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:13:59,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 16:13:59,510 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 16:13:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:13:59,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1237187795, now seen corresponding path program 1 times [2019-12-07 16:13:59,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:13:59,511 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946255791] [2019-12-07 16:13:59,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/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 [2019-12-07 16:13:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:13:59,546 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 16:13:59,547 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:13:59,573 INFO L377 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 [2019-12-07 16:13:59,574 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:13:59,576 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:13:59,577 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:13:59,577 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 16:13:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:59,586 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:13:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:13:59,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946255791] [2019-12-07 16:13:59,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:13:59,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 16:13:59,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300764418] [2019-12-07 16:13:59,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:13:59,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 16:13:59,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:13:59,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:13:59,590 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2019-12-07 16:13:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:13:59,625 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-12-07 16:13:59,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:13:59,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 16:13:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:13:59,626 INFO L225 Difference]: With dead ends: 18 [2019-12-07 16:13:59,626 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 16:13:59,627 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:13:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 16:13:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2019-12-07 16:13:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 16:13:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 16:13:59,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-12-07 16:13:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:13:59,628 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 16:13:59,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:13:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-12-07 16:13:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 16:13:59,629 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:13:59,629 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:13:59,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 16:13:59,831 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 16:13:59,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:13:59,832 INFO L82 PathProgramCache]: Analyzing trace with hash 359142382, now seen corresponding path program 1 times [2019-12-07 16:13:59,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 16:13:59,833 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099068967] [2019-12-07 16:13:59,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_736ae7a1-0383-4083-8a68-405c9677d466/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 16:13:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:13:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:13:59,961 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 16:13:59,962 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:14:00,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 16:14:00,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:14:00 BoogieIcfgContainer [2019-12-07 16:14:00,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:14:00,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:14:00,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:14:00,208 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:14:00,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:13:57" (3/4) ... [2019-12-07 16:14:00,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 16:14:00,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:14:00,213 INFO L168 Benchmark]: Toolchain (without parser) took 3227.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 947.0 MB in the beginning and 907.0 MB in the end (delta: 40.0 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:14:00,214 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:14:00,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-12-07 16:14:00,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:14:00,215 INFO L168 Benchmark]: Boogie Preprocessor took 17.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:14:00,215 INFO L168 Benchmark]: RCFGBuilder took 196.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:14:00,216 INFO L168 Benchmark]: TraceAbstraction took 2528.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 907.0 MB in the end (delta: 143.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 11.5 GB. [2019-12-07 16:14:00,216 INFO L168 Benchmark]: Witness Printer took 4.10 ms. Allocated memory is still 1.1 GB. Free memory is still 907.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:14:00,218 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 442.59 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2528.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 907.0 MB in the end (delta: 143.1 MB). Peak memory consumption was 143.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.10 ms. Allocated memory is still 1.1 GB. Free memory is still 907.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 764. Possible 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] COND TRUE \read(*p) [L526] COND FALSE !(__VERIFIER_nondet_int()) [L529] return 0; VAL [ldv_global_msg_list={3:0}] [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) VAL [ldv_global_msg_list={3:0}] [L761] free(q) VAL [ldv_global_msg_list={3:0}] [L761] free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Result: UNSAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 89 SDslu, 67 SDs, 0 SdLazy, 90 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1468 SizeOfPredicates, 7 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...