./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw --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 b68a60a1004db041631656acc5775ad13321e46c020cb1a181ddf112036ec7ab ............................................................................................................................................. 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_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw --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 b68a60a1004db041631656acc5775ad13321e46c020cb1a181ddf112036ec7ab ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:45:00,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:45:00,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:45:00,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:45:00,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:45:00,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:45:00,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:45:00,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:45:00,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:45:00,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:45:00,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:45:00,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:45:00,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:45:00,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:45:00,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:45:00,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:45:00,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:45:00,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:45:00,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:45:00,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:45:00,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:45:00,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:45:00,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:45:00,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:45:00,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:45:00,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:45:00,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:45:00,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:45:00,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:45:00,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:45:00,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:45:00,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:45:00,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:45:00,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:45:00,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:45:00,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:45:00,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:45:00,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:45:00,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:45:00,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:45:00,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:45:00,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 05:45:00,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:45:00,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:45:00,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:45:00,411 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:45:00,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:45:00,412 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:45:00,412 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:45:00,413 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:45:00,413 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:45:00,413 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:45:00,415 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:45:00,415 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:45:00,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:45:00,416 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:45:00,416 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:45:00,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:45:00,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:45:00,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:45:00,418 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:45:00,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:45:00,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:45:00,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:45:00,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:45:00,419 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:45:00,419 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:45:00,419 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:45:00,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:45:00,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:45:00,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:45:00,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:45:00,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:45:00,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:45:00,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:45:00,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:45:00,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:45:00,422 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:45:00,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:45:00,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:45:00,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:45:00,423 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_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68a60a1004db041631656acc5775ad13321e46c020cb1a181ddf112036ec7ab [2021-10-20 05:45:00,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:45:00,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:45:00,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:45:00,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:45:00,824 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:45:00,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i [2021-10-20 05:45:00,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/1b497b1ed/4e6fba41ca8c419f9276a55c7f81cce2/FLAG47d9afe6b [2021-10-20 05:45:01,540 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:45:01,540 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i [2021-10-20 05:45:01,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/1b497b1ed/4e6fba41ca8c419f9276a55c7f81cce2/FLAG47d9afe6b [2021-10-20 05:45:01,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/1b497b1ed/4e6fba41ca8c419f9276a55c7f81cce2 [2021-10-20 05:45:01,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:45:01,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:45:01,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:45:01,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:45:01,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:45:01,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:45:01" (1/1) ... [2021-10-20 05:45:01,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b92c85e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:01, skipping insertion in model container [2021-10-20 05:45:01,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:45:01" (1/1) ... [2021-10-20 05:45:01,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:45:01,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:45:02,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:45:02,360 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) [2021-10-20 05:45:02,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a4bc0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:02, skipping insertion in model container [2021-10-20 05:45:02,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:45:02,362 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:45:02,364 INFO L168 Benchmark]: Toolchain (without parser) took 567.19 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 70.4 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:02,365 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 96.5 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:45:02,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.13 ms. Allocated memory is still 96.5 MB. Free memory was 57.9 MB in the beginning and 70.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:02,370 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 96.5 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.13 ms. Allocated memory is still 96.5 MB. Free memory was 57.9 MB in the beginning and 70.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:45:05,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:45:05,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:45:05,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:45:05,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:45:05,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:45:05,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:45:05,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:45:05,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:45:05,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:45:05,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:45:05,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:45:05,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:45:05,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:45:05,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:45:05,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:45:05,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:45:05,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:45:05,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:45:05,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:45:05,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:45:05,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:45:05,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:45:05,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:45:05,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:45:05,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:45:05,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:45:05,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:45:05,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:45:05,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:45:05,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:45:05,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:45:05,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:45:05,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:45:05,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:45:05,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:45:05,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:45:05,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:45:05,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:45:05,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:45:05,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:45:05,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-20 05:45:05,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:45:05,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:45:05,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:45:05,352 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:45:05,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:45:05,353 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:45:05,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:45:05,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:45:05,354 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:45:05,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:45:05,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:45:05,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:45:05,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:45:05,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:45:05,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:45:05,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:45:05,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:45:05,361 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:45:05,361 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:45:05,361 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:45:05,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:45:05,362 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:45:05,362 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:45:05,363 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:45:05,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:45:05,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:45:05,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:45:05,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:45:05,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:45:05,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:45:05,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:45:05,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:45:05,367 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:45:05,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:45:05,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:45:05,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:45:05,368 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_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68a60a1004db041631656acc5775ad13321e46c020cb1a181ddf112036ec7ab [2021-10-20 05:45:05,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:45:05,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:45:05,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:45:05,879 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:45:05,880 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:45:05,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i [2021-10-20 05:45:05,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/2a54a299c/d818f873a37844779f5a223b66aa2286/FLAGcfacecc30 [2021-10-20 05:45:06,744 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:45:06,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/sv-benchmarks/c/ldv-memsafety/memleaks_test3-2.i [2021-10-20 05:45:06,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/2a54a299c/d818f873a37844779f5a223b66aa2286/FLAGcfacecc30 [2021-10-20 05:45:06,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/data/2a54a299c/d818f873a37844779f5a223b66aa2286 [2021-10-20 05:45:06,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:45:06,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:45:06,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:45:06,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:45:06,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:45:06,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:45:06" (1/1) ... [2021-10-20 05:45:06,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ac1a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:06, skipping insertion in model container [2021-10-20 05:45:06,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:45:06" (1/1) ... [2021-10-20 05:45:07,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:45:07,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:45:07,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:45:07,607 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:45:07,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:45:07,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:45:07,747 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:45:07,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:45:07,930 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:45:07,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07 WrapperNode [2021-10-20 05:45:07,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:45:07,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:45:07,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:45:07,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:45:07,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:07,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:07,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:45:07,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:45:07,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:45:07,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:45:08,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:45:08,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:45:08,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:45:08,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:45:08,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (1/1) ... [2021-10-20 05:45:08,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:45:08,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:45:08,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:45:08,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:45:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 05:45:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:45:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:45:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-20 05:45:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:45:08,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:45:08,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:45:08,489 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-20 05:45:08,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:45:08 BoogieIcfgContainer [2021-10-20 05:45:08,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:45:08,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:45:08,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:45:08,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:45:08,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:45:06" (1/3) ... [2021-10-20 05:45:08,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e49936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:45:08, skipping insertion in model container [2021-10-20 05:45:08,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:45:07" (2/3) ... [2021-10-20 05:45:08,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e49936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:45:08, skipping insertion in model container [2021-10-20 05:45:08,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:45:08" (3/3) ... [2021-10-20 05:45:08,506 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test3-2.i [2021-10-20 05:45:08,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:45:08,513 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-20 05:45:08,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:45:08,592 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:45:08,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-20 05:45:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:08,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:45:08,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:08,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:08,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:08,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965639, now seen corresponding path program 1 times [2021-10-20 05:45:08,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:08,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635885156] [2021-10-20 05:45:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:08,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:08,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:08,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:08,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:45:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:08,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:45:08,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:08,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:09,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:09,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635885156] [2021-10-20 05:45:09,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635885156] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:09,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:09,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:45:09,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297705089] [2021-10-20 05:45:09,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:45:09,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:45:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:45:09,071 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:09,185 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-20 05:45:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:45:09,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:45:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:09,199 INFO L225 Difference]: With dead ends: 29 [2021-10-20 05:45:09,199 INFO L226 Difference]: Without dead ends: 25 [2021-10-20 05:45:09,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:45:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-20 05:45:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-10-20 05:45:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-20 05:45:09,240 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-20 05:45:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:09,241 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-20 05:45:09,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-20 05:45:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:45:09,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:09,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:09,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:09,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:09,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-10-20 05:45:09,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:09,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994557042] [2021-10-20 05:45:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:09,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:09,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:09,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:09,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:45:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:09,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:45:09,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:09,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:09,672 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:09,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994557042] [2021-10-20 05:45:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994557042] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:09,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:09,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:45:09,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985914474] [2021-10-20 05:45:09,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:45:09,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:45:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:45:09,677 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:09,733 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-20 05:45:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:45:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:45:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:09,736 INFO L225 Difference]: With dead ends: 16 [2021-10-20 05:45:09,736 INFO L226 Difference]: Without dead ends: 16 [2021-10-20 05:45:09,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:45:09,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-20 05:45:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-20 05:45:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-20 05:45:09,746 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2021-10-20 05:45:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:09,747 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-20 05:45:09,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-20 05:45:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 05:45:09,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:09,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:09,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:09,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:09,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:09,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812681, now seen corresponding path program 1 times [2021-10-20 05:45:09,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:09,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407580923] [2021-10-20 05:45:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:09,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:09,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:09,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:10,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:45:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:10,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:45:10,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:10,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:10,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:10,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407580923] [2021-10-20 05:45:10,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407580923] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:10,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:10,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:45:10,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095339733] [2021-10-20 05:45:10,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:45:10,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:10,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:45:10,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:45:10,147 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:10,170 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-20 05:45:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:45:10,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 05:45:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:10,172 INFO L225 Difference]: With dead ends: 22 [2021-10-20 05:45:10,172 INFO L226 Difference]: Without dead ends: 21 [2021-10-20 05:45:10,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:45:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-20 05:45:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 13. [2021-10-20 05:45:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-20 05:45:10,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-10-20 05:45:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:10,177 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-20 05:45:10,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-20 05:45:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:45:10,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:10,178 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:10,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:10,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:10,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:10,392 INFO L82 PathProgramCache]: Analyzing trace with hash 119352011, now seen corresponding path program 1 times [2021-10-20 05:45:10,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:10,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960523597] [2021-10-20 05:45:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:10,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:10,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:10,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:10,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:45:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:10,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 05:45:10,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:10,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:10,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:10,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960523597] [2021-10-20 05:45:10,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960523597] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:10,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:10,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-20 05:45:10,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292129727] [2021-10-20 05:45:10,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-20 05:45:10,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-20 05:45:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:45:10,744 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:11,057 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-20 05:45:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-20 05:45:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-20 05:45:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:11,059 INFO L225 Difference]: With dead ends: 21 [2021-10-20 05:45:11,059 INFO L226 Difference]: Without dead ends: 21 [2021-10-20 05:45:11,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 308.4ms TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-10-20 05:45:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-20 05:45:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 12. [2021-10-20 05:45:11,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-20 05:45:11,063 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-20 05:45:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:11,063 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-20 05:45:11,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-20 05:45:11,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:45:11,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:11,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:11,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:11,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:11,266 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash -595054905, now seen corresponding path program 1 times [2021-10-20 05:45:11,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:11,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31994900] [2021-10-20 05:45:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:11,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:11,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:11,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:45:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:11,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:45:11,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:11,381 INFO L388 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 [2021-10-20 05:45:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:11,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:11,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:11,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31994900] [2021-10-20 05:45:11,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31994900] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:11,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:11,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:45:11,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668719058] [2021-10-20 05:45:11,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:45:11,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:45:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:45:11,542 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:11,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:11,639 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-20 05:45:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:45:11,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 05:45:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:11,643 INFO L225 Difference]: With dead ends: 18 [2021-10-20 05:45:11,644 INFO L226 Difference]: Without dead ends: 18 [2021-10-20 05:45:11,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:45:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-20 05:45:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-20 05:45:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-20 05:45:11,649 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-10-20 05:45:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:11,650 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-20 05:45:11,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:11,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-20 05:45:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:45:11,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:11,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:11,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:11,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:11,866 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1179952457, now seen corresponding path program 1 times [2021-10-20 05:45:11,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:11,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920261592] [2021-10-20 05:45:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:11,868 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:11,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:11,869 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:11,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:45:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:11,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:45:11,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:12,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:12,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:12,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920261592] [2021-10-20 05:45:12,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920261592] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:12,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:12,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-20 05:45:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603911496] [2021-10-20 05:45:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:45:12,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:45:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:45:12,059 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:12,123 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-20 05:45:12,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:45:12,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 05:45:12,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:12,127 INFO L225 Difference]: With dead ends: 14 [2021-10-20 05:45:12,128 INFO L226 Difference]: Without dead ends: 11 [2021-10-20 05:45:12,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:45:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-20 05:45:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-20 05:45:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-20 05:45:12,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 9 [2021-10-20 05:45:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:12,136 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-20 05:45:12,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:12,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-20 05:45:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:45:12,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:45:12,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:45:12,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:12,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:12,352 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-20 05:45:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:45:12,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1266832815, now seen corresponding path program 1 times [2021-10-20 05:45:12,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:45:12,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109463912] [2021-10-20 05:45:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:45:12,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:45:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:45:12,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:45:12,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:45:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:45:12,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:45:12,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:45:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:12,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:45:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:45:16,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:45:16,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109463912] [2021-10-20 05:45:16,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109463912] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:45:16,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:45:16,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-20 05:45:16,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665583414] [2021-10-20 05:45:16,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-20 05:45:16,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:45:16,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-20 05:45:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2021-10-20 05:45:16,868 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:45:17,052 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2021-10-20 05:45:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:45:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-20 05:45:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:45:17,053 INFO L225 Difference]: With dead ends: 10 [2021-10-20 05:45:17,053 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:45:17,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 4377.7ms TimeCoverageRelationStatistics Valid=48, Invalid=132, Unknown=2, NotChecked=0, Total=182 [2021-10-20 05:45:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:45:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:45:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:45:17,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-20 05:45:17,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:45:17,054 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:45:17,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:45:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:45:17,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:45:17,057 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:45:17,058 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:45:17,058 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:45:17,058 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:45:17,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-20 05:45:17,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:45:17,262 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:45:17,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:45:17 BoogieIcfgContainer [2021-10-20 05:45:17,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:45:17,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:45:17,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:45:17,265 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:45:17,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:45:08" (3/4) ... [2021-10-20 05:45:17,269 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:45:17,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-20 05:45:17,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 05:45:17,279 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:45:17,339 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:45:17,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:45:17,346 INFO L168 Benchmark]: Toolchain (without parser) took 10372.85 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 32.6 MB in the beginning and 40.0 MB in the end (delta: -7.3 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,346 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:45:17,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 947.87 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 32.5 MB in the beginning and 57.0 MB in the end (delta: -24.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.07 ms. Allocated memory is still 77.6 MB. Free memory was 57.0 MB in the beginning and 54.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,348 INFO L168 Benchmark]: Boogie Preprocessor took 45.14 ms. Allocated memory is still 77.6 MB. Free memory was 54.9 MB in the beginning and 53.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,348 INFO L168 Benchmark]: RCFGBuilder took 455.00 ms. Allocated memory is still 77.6 MB. Free memory was 53.6 MB in the beginning and 43.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,349 INFO L168 Benchmark]: TraceAbstraction took 8770.41 ms. Allocated memory is still 77.6 MB. Free memory was 42.9 MB in the beginning and 42.5 MB in the end (delta: 355.9 kB). Peak memory consumption was 638.3 kB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,349 INFO L168 Benchmark]: Witness Printer took 80.00 ms. Allocated memory is still 77.6 MB. Free memory was 42.5 MB in the beginning and 40.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:45:17,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 947.87 ms. Allocated memory was 56.6 MB in the beginning and 77.6 MB in the end (delta: 21.0 MB). Free memory was 32.5 MB in the beginning and 57.0 MB in the end (delta: -24.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.07 ms. Allocated memory is still 77.6 MB. Free memory was 57.0 MB in the beginning and 54.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.14 ms. Allocated memory is still 77.6 MB. Free memory was 54.9 MB in the beginning and 53.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 455.00 ms. Allocated memory is still 77.6 MB. Free memory was 53.6 MB in the beginning and 43.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8770.41 ms. Allocated memory is still 77.6 MB. Free memory was 42.9 MB in the beginning and 42.5 MB in the end (delta: 355.9 kB). Peak memory consumption was 638.3 kB. Max. memory is 16.1 GB. * Witness Printer took 80.00 ms. Allocated memory is still 77.6 MB. Free memory was 42.5 MB in the beginning and 40.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 764]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8681.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 29.0ms, AutomataDifference: 925.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 67 SDtfs, 135 SDslu, 90 SDs, 0 SdLazy, 157 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 284.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4890.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 76.6ms SsaConstructionTime, 117.6ms SatisfiabilityAnalysisTime, 5419.9ms InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 2 QuantifiedInterpolants, 519 SizeOfPredicates, 16 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-20 05:45:17,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1389bb98-874d-4012-bf4e-86119b536d05/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...