./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI --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 bb53649e57c73811eb036860baf1102917fa8259 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI --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 bb53649e57c73811eb036860baf1102917fa8259 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:18,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:18,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:18,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:18,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:18,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:18,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:18,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:18,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:18,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:18,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:18,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:18,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:18,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:18,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:18,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:18,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:18,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:18,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:18,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:18,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:18,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:18,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:18,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:18,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:18,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:18,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:18,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:18,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:18,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:18,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:18,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:18,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:18,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:18,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:18,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:18,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:18,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:18,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:18,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:18,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:18,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:32:18,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:18,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:18,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:18,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:18,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:18,408 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:18,408 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:18,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:18,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:18,409 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:18,410 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:18,411 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:18,411 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:18,411 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:18,411 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:18,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:32:18,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:32:18,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:18,414 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:18,414 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:18,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:18,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:18,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:18,415 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:32:18,415 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:32:18,415 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:32:18,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:18,418 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:18,418 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:18,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:18,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:18,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:18,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:18,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:18,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:18,420 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:18,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:18,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:18,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:18,421 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_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb53649e57c73811eb036860baf1102917fa8259 [2021-10-11 02:32:18,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:18,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:18,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:18,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:18,742 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:18,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-11 02:32:18,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/f8d5eda0a/7149e0a0c15b4231bd4c99aaf80bedbd/FLAG08ec1ce92 [2021-10-11 02:32:19,416 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:19,424 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-11 02:32:19,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/f8d5eda0a/7149e0a0c15b4231bd4c99aaf80bedbd/FLAG08ec1ce92 [2021-10-11 02:32:19,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/f8d5eda0a/7149e0a0c15b4231bd4c99aaf80bedbd [2021-10-11 02:32:19,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:19,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:19,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:19,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:19,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:19,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:19" (1/1) ... [2021-10-11 02:32:19,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7411ee3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:19, skipping insertion in model container [2021-10-11 02:32:19,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:19" (1/1) ... [2021-10-11 02:32:19,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:19,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:20,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:20,350 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) [2021-10-11 02:32:20,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44022b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:20, skipping insertion in model container [2021-10-11 02:32:20,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:20,352 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:32:20,356 INFO L168 Benchmark]: Toolchain (without parser) took 649.26 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 69.1 MB in the beginning and 100.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:20,358 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:20,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.54 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 69.1 MB in the beginning and 100.4 MB in the end (delta: -31.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:20,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 645.54 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 69.1 MB in the beginning and 100.4 MB in the end (delta: -31.3 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: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:22,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:22,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:22,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:22,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:22,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:22,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:22,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:22,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:22,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:22,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:22,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:22,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:22,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:22,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:22,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:22,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:22,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:22,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:22,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:22,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:22,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:22,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:22,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:22,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:22,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:22,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:22,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:22,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:22,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:22,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:22,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:22,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:22,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:22,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:22,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:22,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:22,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:22,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:22,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:22,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:22,826 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:32:22,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:22,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:22,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:22,872 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:22,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:22,873 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:22,873 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:22,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:22,873 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:22,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:32:22,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:32:22,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:22,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:22,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:22,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:22,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:22,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:22,878 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:32:22,878 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:32:22,879 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:32:22,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:22,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:22,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:32:22,880 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:32:22,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:22,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:22,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:22,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:32:22,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:22,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:22,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:22,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:22,882 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:32:22,882 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:22,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:22,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:22,883 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_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb53649e57c73811eb036860baf1102917fa8259 [2021-10-11 02:32:23,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:23,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:23,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:23,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:23,281 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:23,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-11 02:32:23,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/06ce0d82b/3ffe669e3feb4f2ca72bdcab26210120/FLAG77dd3a027 [2021-10-11 02:32:23,957 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:23,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-11 02:32:23,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/06ce0d82b/3ffe669e3feb4f2ca72bdcab26210120/FLAG77dd3a027 [2021-10-11 02:32:24,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/data/06ce0d82b/3ffe669e3feb4f2ca72bdcab26210120 [2021-10-11 02:32:24,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:24,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:24,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:24,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:24,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:24,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:24" (1/1) ... [2021-10-11 02:32:24,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519967a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:24, skipping insertion in model container [2021-10-11 02:32:24,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:24" (1/1) ... [2021-10-11 02:32:24,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:24,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:24,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:24,855 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:32:24,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:24,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:25,002 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:25,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:25,161 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:25,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25 WrapperNode [2021-10-11 02:32:25,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:25,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:25,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:25,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:25,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:25,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:25,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:25,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:25,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... [2021-10-11 02:32:25,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:25,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:25,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:25,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:25,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:32:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:32:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:32:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:25,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:25,906 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:32:25,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:25 BoogieIcfgContainer [2021-10-11 02:32:25,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:25,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:25,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:25,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:25,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:24" (1/3) ... [2021-10-11 02:32:25,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c880767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:25, skipping insertion in model container [2021-10-11 02:32:25,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:25" (2/3) ... [2021-10-11 02:32:25,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c880767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:25, skipping insertion in model container [2021-10-11 02:32:25,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:25" (3/3) ... [2021-10-11 02:32:25,919 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test18_1.i [2021-10-11 02:32:25,933 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:25,937 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:32:25,949 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:32:25,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:25,990 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:32:25,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:25,990 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:25,990 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:25,990 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:25,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:25,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-10-11 02:32:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:32:26,011 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:32:26,012 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:26,019 INFO L82 PathProgramCache]: Analyzing trace with hash 889508767, now seen corresponding path program 1 times [2021-10-11 02:32:26,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:26,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107478231] [2021-10-11 02:32:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:26,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:26,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:26,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:26,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107478231] [2021-10-11 02:32:26,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:26,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:26,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672595238] [2021-10-11 02:32:26,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:26,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:26,243 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 4 states. [2021-10-11 02:32:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:26,515 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2021-10-11 02:32:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:26,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:32:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:26,528 INFO L225 Difference]: With dead ends: 101 [2021-10-11 02:32:26,528 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 02:32:26,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 02:32:26,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 29. [2021-10-11 02:32:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:32:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-10-11 02:32:26,566 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 6 [2021-10-11 02:32:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:26,567 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-10-11 02:32:26,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-10-11 02:32:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:32:26,568 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:26,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:32:26,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:32:26,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:26,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:26,785 INFO L82 PathProgramCache]: Analyzing trace with hash 889568349, now seen corresponding path program 1 times [2021-10-11 02:32:26,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:26,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973059248] [2021-10-11 02:32:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:26,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:26,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:26,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:26,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973059248] [2021-10-11 02:32:26,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:26,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:26,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872165867] [2021-10-11 02:32:26,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:26,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:26,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:26,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:26,919 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 3 states. [2021-10-11 02:32:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:27,022 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-10-11 02:32:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:27,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:32:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:27,026 INFO L225 Difference]: With dead ends: 49 [2021-10-11 02:32:27,027 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 02:32:27,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 02:32:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2021-10-11 02:32:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:32:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2021-10-11 02:32:27,052 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 6 [2021-10-11 02:32:27,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:27,053 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-10-11 02:32:27,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2021-10-11 02:32:27,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:27,055 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:27,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:27,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:32:27,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:27,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:27,263 INFO L82 PathProgramCache]: Analyzing trace with hash -592078639, now seen corresponding path program 1 times [2021-10-11 02:32:27,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:27,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905545525] [2021-10-11 02:32:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:27,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:27,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:27,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:27,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905545525] [2021-10-11 02:32:27,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:27,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:27,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140367231] [2021-10-11 02:32:27,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:27,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:27,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:27,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:27,422 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand 4 states. [2021-10-11 02:32:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:27,500 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2021-10-11 02:32:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:27,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:32:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:27,503 INFO L225 Difference]: With dead ends: 67 [2021-10-11 02:32:27,503 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 02:32:27,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 02:32:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 39. [2021-10-11 02:32:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:32:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-11 02:32:27,512 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2021-10-11 02:32:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:27,512 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-11 02:32:27,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-10-11 02:32:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:27,514 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:27,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:27,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:32:27,726 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1173278059, now seen corresponding path program 1 times [2021-10-11 02:32:27,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:27,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074497966] [2021-10-11 02:32:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:27,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:27,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:27,856 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:32:27,857 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:27,861 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:27,862 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:27,862 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:32:27,942 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:27,942 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2021-10-11 02:32:27,960 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:27,972 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:27,982 INFO L547 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. [2021-10-11 02:32:27,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2021-10-11 02:32:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:28,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:28,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074497966] [2021-10-11 02:32:28,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:28,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:28,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957077494] [2021-10-11 02:32:28,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:28,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:28,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:28,073 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 5 states. [2021-10-11 02:32:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:28,456 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2021-10-11 02:32:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:32:28,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:32:28,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:28,461 INFO L225 Difference]: With dead ends: 114 [2021-10-11 02:32:28,461 INFO L226 Difference]: Without dead ends: 114 [2021-10-11 02:32:28,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:32:28,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-11 02:32:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 51. [2021-10-11 02:32:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:32:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2021-10-11 02:32:28,469 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 10 [2021-10-11 02:32:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:28,469 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2021-10-11 02:32:28,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2021-10-11 02:32:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:28,474 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:28,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:28,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:32:28,682 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1173278058, now seen corresponding path program 1 times [2021-10-11 02:32:28,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:28,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129816215] [2021-10-11 02:32:28,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:28,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:32:28,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:28,826 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:32:28,827 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:28,844 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:28,849 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:32:28,850 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:28,861 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:28,867 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:28,869 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2021-10-11 02:32:28,975 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:28,975 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-10-11 02:32:28,979 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:28,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:29,006 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-10-11 02:32:29,014 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:29,031 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:29,036 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:29,039 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:14 [2021-10-11 02:32:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:29,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:29,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129816215] [2021-10-11 02:32:29,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:29,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:29,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570134713] [2021-10-11 02:32:29,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:29,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:29,078 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 6 states. [2021-10-11 02:32:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:29,340 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2021-10-11 02:32:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:32:29,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:32:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:29,342 INFO L225 Difference]: With dead ends: 75 [2021-10-11 02:32:29,342 INFO L226 Difference]: Without dead ends: 75 [2021-10-11 02:32:29,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-11 02:32:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2021-10-11 02:32:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 02:32:29,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2021-10-11 02:32:29,351 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 10 [2021-10-11 02:32:29,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:29,352 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2021-10-11 02:32:29,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2021-10-11 02:32:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:29,353 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:29,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:29,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:32:29,565 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:29,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1982624685, now seen corresponding path program 1 times [2021-10-11 02:32:29,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:29,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853635111] [2021-10-11 02:32:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:29,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:29,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:29,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:29,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853635111] [2021-10-11 02:32:29,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:29,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:29,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547240629] [2021-10-11 02:32:29,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:29,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:29,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:29,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:29,665 INFO L87 Difference]: Start difference. First operand 55 states and 73 transitions. Second operand 4 states. [2021-10-11 02:32:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:29,768 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2021-10-11 02:32:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:29,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:32:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:29,769 INFO L225 Difference]: With dead ends: 60 [2021-10-11 02:32:29,769 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 02:32:29,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 02:32:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2021-10-11 02:32:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:32:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-10-11 02:32:29,773 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 10 [2021-10-11 02:32:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:29,773 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-10-11 02:32:29,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-10-11 02:32:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:32:29,774 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:29,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:29,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:32:29,975 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:29,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2056132881, now seen corresponding path program 1 times [2021-10-11 02:32:29,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:29,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954133225] [2021-10-11 02:32:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:30,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:30,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:30,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:30,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954133225] [2021-10-11 02:32:30,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:30,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:30,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544272909] [2021-10-11 02:32:30,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:30,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:30,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:30,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:30,067 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2021-10-11 02:32:30,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:30,129 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-10-11 02:32:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:30,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:32:30,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:30,132 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:32:30,132 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 02:32:30,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 02:32:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 37. [2021-10-11 02:32:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:32:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-10-11 02:32:30,148 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 12 [2021-10-11 02:32:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:30,148 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-10-11 02:32:30,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-10-11 02:32:30,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:32:30,149 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:30,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:30,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:32:30,358 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-10-11 02:32:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:30,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2113391183, now seen corresponding path program 1 times [2021-10-11 02:32:30,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:30,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864356125] [2021-10-11 02:32:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eb02e3c-6f3e-4cf2-af29-fe72acb96ad5/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:30,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:32:30,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:32:30,479 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:32:30,479 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:32:30,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:32:30,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:30 BoogieIcfgContainer [2021-10-11 02:32:30,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:30,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:30,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:30,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:30,699 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:25" (3/4) ... [2021-10-11 02:32:30,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:32:30,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:30,703 INFO L168 Benchmark]: Toolchain (without parser) took 6484.64 ms. Allocated memory was 56.6 MB in the beginning and 86.0 MB in the end (delta: 29.4 MB). Free memory was 32.6 MB in the beginning and 48.3 MB in the end (delta: -15.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,704 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory is still 37.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:30,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 942.62 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.5 MB in the beginning and 38.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 36.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,705 INFO L168 Benchmark]: Boogie Preprocessor took 33.13 ms. Allocated memory is still 69.2 MB. Free memory was 36.0 MB in the beginning and 34.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,706 INFO L168 Benchmark]: RCFGBuilder took 658.81 ms. Allocated memory is still 69.2 MB. Free memory was 34.4 MB in the beginning and 34.9 MB in the end (delta: -512.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,707 INFO L168 Benchmark]: TraceAbstraction took 4787.07 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 34.3 MB in the beginning and 48.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:30,707 INFO L168 Benchmark]: Witness Printer took 3.85 ms. Allocated memory is still 86.0 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:30,710 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 56.6 MB. Free memory is still 37.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 942.62 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.5 MB in the beginning and 38.3 MB in the end (delta: -5.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.01 ms. Allocated memory is still 69.2 MB. Free memory was 38.3 MB in the beginning and 36.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.13 ms. Allocated memory is still 69.2 MB. Free memory was 36.0 MB in the beginning and 34.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 658.81 ms. Allocated memory is still 69.2 MB. Free memory was 34.4 MB in the beginning and 34.9 MB in the end (delta: -512.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4787.07 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 34.3 MB in the beginning and 48.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.85 ms. Allocated memory is still 86.0 MB. Free memory is still 48.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 778]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 778. 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}] [L761] int len = 10; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L762] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L763] struct A18 *p; [L764] int i=0; [L765] int j; VAL [ldv_global_msg_list={3:0}] [L766] COND FALSE !(!array) VAL [ldv_global_msg_list={3:0}] [L767] COND TRUE i=0) VAL [ldv_global_msg_list={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 233 SDtfs, 423 SDslu, 321 SDs, 0 SdLazy, 241 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, 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, 7 MinimizatonAttempts, 235 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 56 ConstructedInterpolants, 3 QuantifiedInterpolants, 2524 SizeOfPredicates, 20 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...