./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG --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 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c ................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG --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 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:51:26,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:51:26,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:51:26,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:51:26,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:51:26,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:51:26,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:51:26,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:51:26,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:51:26,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:51:26,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:51:26,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:51:26,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:51:26,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:51:26,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:51:26,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:51:26,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:51:26,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:51:26,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:51:26,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:51:26,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:51:26,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:51:26,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:51:26,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:51:26,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:51:26,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:51:26,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:51:26,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:51:26,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:51:26,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:51:26,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:51:26,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:51:26,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:51:26,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:51:26,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:51:26,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:51:26,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:51:26,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:51:26,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:51:26,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:51:26,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:51:26,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:51:26,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:51:26,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:51:26,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:51:26,581 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:51:26,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:51:26,581 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:51:26,581 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:51:26,582 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:51:26,582 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:51:26,582 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:51:26,582 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:51:26,582 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:51:26,583 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:51:26,583 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:51:26,583 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:51:26,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:51:26,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:51:26,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:51:26,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:51:26,585 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:51:26,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:51:26,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:51:26,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:51:26,585 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:51:26,585 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:51:26,586 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:51:26,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:51:26,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:51:26,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:51:26,586 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:51:26,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:51:26,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:51:26,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:26,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:51:26,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:51:26,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:51:26,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:51:26,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:51:26,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:51:26,588 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_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-10-29 05:51:26,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:51:26,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:51:26,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:51:26,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:51:26,935 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:51:26,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-29 05:51:27,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/b5ae80781/ba7bb360255f4025ace450bc453eb661/FLAG3435713a6 [2021-10-29 05:51:27,703 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:51:27,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-29 05:51:27,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/b5ae80781/ba7bb360255f4025ace450bc453eb661/FLAG3435713a6 [2021-10-29 05:51:28,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/b5ae80781/ba7bb360255f4025ace450bc453eb661 [2021-10-29 05:51:28,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:51:28,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:51:28,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:28,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:51:28,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:51:28,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190677f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28, skipping insertion in model container [2021-10-29 05:51:28,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:51:28,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:51:28,299 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-29 05:51:28,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:28,313 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:51:28,345 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-29 05:51:28,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:28,362 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:51:28,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28 WrapperNode [2021-10-29 05:51:28,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:28,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:51:28,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:51:28,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:51:28,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:51:28,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:51:28,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:51:28,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:51:28,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:51:28,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:51:28,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:51:28,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:51:28,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (1/1) ... [2021-10-29 05:51:28,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:28,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:51:28,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:51:28,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:51:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:51:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:51:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:51:28,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:51:29,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:51:29,294 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:51:29,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:29 BoogieIcfgContainer [2021-10-29 05:51:29,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:51:29,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:51:29,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:51:29,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:51:29,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:51:28" (1/3) ... [2021-10-29 05:51:29,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdc007d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:51:29, skipping insertion in model container [2021-10-29 05:51:29,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:28" (2/3) ... [2021-10-29 05:51:29,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdc007d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:51:29, skipping insertion in model container [2021-10-29 05:51:29,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:29" (3/3) ... [2021-10-29 05:51:29,311 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-29 05:51:29,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:51:29,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:51:29,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:51:29,395 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 [2021-10-29 05:51:29,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:51:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 36 states have internal predecessors, (66), 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) [2021-10-29 05:51:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:51:29,423 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:29,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:51:29,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:29,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:29,452 INFO L85 PathProgramCache]: Analyzing trace with hash 9113736, now seen corresponding path program 1 times [2021-10-29 05:51:29,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:51:29,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089664538] [2021-10-29 05:51:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:29,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:51:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:29,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:51:29,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089664538] [2021-10-29 05:51:29,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089664538] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:29,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:29,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:51:29,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834274311] [2021-10-29 05:51:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:51:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:51:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:51:29,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:51:29,698 INFO L87 Difference]: Start difference. First operand has 37 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 36 states have internal predecessors, (66), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-29 05:51:29,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:29,711 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2021-10-29 05:51:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:51:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-10-29 05:51:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:29,722 INFO L225 Difference]: With dead ends: 37 [2021-10-29 05:51:29,722 INFO L226 Difference]: Without dead ends: 36 [2021-10-29 05:51:29,724 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:51:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-29 05:51:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-29 05:51:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 35 states have internal predecessors, (63), 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) [2021-10-29 05:51:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-10-29 05:51:29,760 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2021-10-29 05:51:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:29,760 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-10-29 05:51:29,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-10-29 05:51:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-10-29 05:51:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:51:29,761 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:29,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:51:29,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:51:29,762 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:29,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash 274635153, now seen corresponding path program 1 times [2021-10-29 05:51:29,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:51:29,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736220677] [2021-10-29 05:51:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:29,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:51:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:29,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:51:29,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736220677] [2021-10-29 05:51:29,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736220677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:29,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:29,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:51:29,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653825409] [2021-10-29 05:51:29,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:29,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:51:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:29,819 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-29 05:51:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:29,826 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2021-10-29 05:51:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-29 05:51:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:29,828 INFO L225 Difference]: With dead ends: 35 [2021-10-29 05:51:29,828 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 05:51:29,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 05:51:29,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-29 05:51:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 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) [2021-10-29 05:51:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2021-10-29 05:51:29,836 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2021-10-29 05:51:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:29,836 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2021-10-29 05:51:29,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-29 05:51:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2021-10-29 05:51:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:51:29,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:29,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:51:29,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:51:29,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash -67997349, now seen corresponding path program 1 times [2021-10-29 05:51:29,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:51:29,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374691918] [2021-10-29 05:51:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:29,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:51:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:29,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:51:29,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374691918] [2021-10-29 05:51:29,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374691918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:29,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:29,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:51:29,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864006908] [2021-10-29 05:51:29,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:51:29,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:51:29,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:51:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:51:29,965 INFO L87 Difference]: Start difference. First operand 33 states and 60 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-29 05:51:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:30,023 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2021-10-29 05:51:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:51:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-10-29 05:51:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:30,032 INFO L225 Difference]: With dead ends: 63 [2021-10-29 05:51:30,032 INFO L226 Difference]: Without dead ends: 63 [2021-10-29 05:51:30,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:51:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-29 05:51:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2021-10-29 05:51:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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) [2021-10-29 05:51:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-10-29 05:51:30,046 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-10-29 05:51:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:30,047 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-10-29 05:51:30,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-29 05:51:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-10-29 05:51:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:51:30,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:30,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:51:30,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:51:30,048 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash -67990157, now seen corresponding path program 1 times [2021-10-29 05:51:30,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:51:30,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049216329] [2021-10-29 05:51:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:30,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:51:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:51:30,112 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:51:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:51:30,162 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:51:30,163 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:51:30,164 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:51:30,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:51:30,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:51:30,171 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:51:30,174 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:51:30,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:51:30 BoogieIcfgContainer [2021-10-29 05:51:30,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:51:30,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:51:30,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:51:30,202 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:51:30,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:29" (3/4) ... [2021-10-29 05:51:30,207 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:51:30,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:51:30,209 INFO L168 Benchmark]: Toolchain (without parser) took 2147.98 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 55.4 MB in the beginning and 63.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:30,209 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:30,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.65 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 55.2 MB in the beginning and 95.1 MB in the end (delta: -39.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:30,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.37 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 93.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:30,212 INFO L168 Benchmark]: Boogie Preprocessor took 36.28 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:30,213 INFO L168 Benchmark]: RCFGBuilder took 827.19 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 65.4 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:30,213 INFO L168 Benchmark]: TraceAbstraction took 902.77 ms. Allocated memory is still 119.5 MB. Free memory was 64.6 MB in the beginning and 64.0 MB in the end (delta: 577.8 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:30,214 INFO L168 Benchmark]: Witness Printer took 5.08 ms. Allocated memory is still 119.5 MB. Free memory was 64.0 MB in the beginning and 63.4 MB in the end (delta: 614.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:30,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.65 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 55.2 MB in the beginning and 95.1 MB in the end (delta: -39.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.37 ms. Allocated memory is still 119.5 MB. Free memory was 95.1 MB in the beginning and 93.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.28 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 91.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 827.19 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 65.4 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 902.77 ms. Allocated memory is still 119.5 MB. Free memory was 64.6 MB in the beginning and 64.0 MB in the end (delta: 577.8 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.08 ms. Allocated memory is still 119.5 MB. Free memory was 64.0 MB in the beginning and 63.4 MB in the end (delta: 614.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 219]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 219. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND TRUE p3 != 0 [L97] lk3 = 1 [L100] COND TRUE p4 != 0 [L101] lk4 = 1 [L104] COND FALSE !(p5 != 0) [L108] COND TRUE p6 != 0 [L109] lk6 = 1 [L112] COND TRUE p7 != 0 [L113] lk7 = 1 [L116] COND TRUE p8 != 0 [L117] lk8 = 1 [L120] COND FALSE !(p9 != 0) [L124] COND TRUE p10 != 0 [L125] lk10 = 1 [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND FALSE !(p14 != 0) [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L219] reach_error() - UnprovableResult [Line: 6]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 114 SDslu, 109 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:51:30,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:51:33,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:51:33,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:51:33,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:51:33,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:51:33,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:51:33,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:51:33,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:51:33,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:51:33,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:51:33,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:51:33,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:51:33,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:51:33,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:51:33,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:51:33,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:51:33,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:51:33,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:51:33,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:51:33,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:51:33,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:51:33,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:51:33,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:51:33,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:51:33,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:51:33,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:51:33,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:51:33,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:51:33,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:51:33,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:51:33,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:51:33,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:51:33,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:51:33,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:51:33,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:51:33,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:51:33,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:51:33,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:51:33,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:51:33,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:51:33,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:51:33,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-29 05:51:33,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:51:33,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:51:33,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:51:33,194 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:51:33,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:51:33,195 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:51:33,195 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:51:33,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:51:33,196 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:51:33,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:51:33,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:51:33,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:51:33,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:51:33,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:51:33,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:51:33,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:51:33,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:51:33,200 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:51:33,200 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:51:33,201 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:51:33,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:51:33,201 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:51:33,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:51:33,202 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:51:33,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:51:33,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:51:33,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:51:33,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:51:33,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:51:33,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:33,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:51:33,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:51:33,204 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:51:33,204 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:51:33,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:51:33,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:51:33,205 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_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-10-29 05:51:33,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:51:33,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:51:33,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:51:33,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:51:33,678 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:51:33,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-29 05:51:33,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/9c53378e5/a6e87279bbc64638b55a986ec65e8083/FLAG3b436bea8 [2021-10-29 05:51:34,327 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:51:34,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-29 05:51:34,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/9c53378e5/a6e87279bbc64638b55a986ec65e8083/FLAG3b436bea8 [2021-10-29 05:51:34,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/data/9c53378e5/a6e87279bbc64638b55a986ec65e8083 [2021-10-29 05:51:34,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:51:34,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:51:34,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:34,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:51:34,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:51:34,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:34" (1/1) ... [2021-10-29 05:51:34,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bfe72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:34, skipping insertion in model container [2021-10-29 05:51:34,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:51:34" (1/1) ... [2021-10-29 05:51:34,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:51:34,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:51:34,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-29 05:51:34,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:34,898 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:51:34,972 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-29 05:51:34,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:51:35,013 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:51:35,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35 WrapperNode [2021-10-29 05:51:35,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:51:35,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:51:35,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:51:35,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:51:35,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:51:35,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:51:35,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:51:35,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:51:35,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:51:35,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:51:35,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:51:35,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:51:35,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (1/1) ... [2021-10-29 05:51:35,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:51:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:51:35,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:51:35,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:51:35,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:51:35,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:51:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:51:35,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:51:35,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:51:35,715 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:51:35,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:35 BoogieIcfgContainer [2021-10-29 05:51:35,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:51:35,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:51:35,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:51:35,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:51:35,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:51:34" (1/3) ... [2021-10-29 05:51:35,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4394bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:51:35, skipping insertion in model container [2021-10-29 05:51:35,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:51:35" (2/3) ... [2021-10-29 05:51:35,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4394bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:51:35, skipping insertion in model container [2021-10-29 05:51:35,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:35" (3/3) ... [2021-10-29 05:51:35,727 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-29 05:51:35,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:51:35,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:51:35,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:51:35,827 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 [2021-10-29 05:51:35,829 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:51:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 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) [2021-10-29 05:51:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:51:35,858 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:35,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:51:35,859 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-10-29 05:51:35,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:35,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727487811] [2021-10-29 05:51:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:35,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:35,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:35,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:35,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:51:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:51:36,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:36,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:36,110 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:36,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727487811] [2021-10-29 05:51:36,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727487811] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:36,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:36,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:51:36,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330514133] [2021-10-29 05:51:36,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:51:36,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:36,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:51:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:51:36,143 INFO L87 Difference]: Start difference. First operand has 53 states, 50 states have (on average 1.94) internal successors, (97), 52 states have internal predecessors, (97), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-29 05:51:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:36,167 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-10-29 05:51:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:51:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-29 05:51:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:36,182 INFO L225 Difference]: With dead ends: 53 [2021-10-29 05:51:36,182 INFO L226 Difference]: Without dead ends: 51 [2021-10-29 05:51:36,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:51:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-29 05:51:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-29 05:51:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 50 states have internal predecessors, (92), 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) [2021-10-29 05:51:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-10-29 05:51:36,238 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-10-29 05:51:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:36,238 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-10-29 05:51:36,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-10-29 05:51:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-10-29 05:51:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:51:36,240 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:36,240 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:51:36,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:36,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:36,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-10-29 05:51:36,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:36,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771104422] [2021-10-29 05:51:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:36,460 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:36,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:36,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:36,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:51:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:36,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:51:36,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:36,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:36,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:36,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771104422] [2021-10-29 05:51:36,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771104422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:36,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:36,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:51:36,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568508614] [2021-10-29 05:51:36,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:36,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:36,615 INFO L87 Difference]: Start difference. First operand 51 states and 92 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-29 05:51:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:36,637 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-10-29 05:51:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:36,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-29 05:51:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:36,643 INFO L225 Difference]: With dead ends: 50 [2021-10-29 05:51:36,643 INFO L226 Difference]: Without dead ends: 48 [2021-10-29 05:51:36,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-29 05:51:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-29 05:51:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 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) [2021-10-29 05:51:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-10-29 05:51:36,658 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-10-29 05:51:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:36,658 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-10-29 05:51:36,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-29 05:51:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-10-29 05:51:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:51:36,660 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:36,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:36,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:36,871 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-10-29 05:51:36,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:36,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569334561] [2021-10-29 05:51:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:36,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:36,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:36,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:36,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:51:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:36,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:51:36,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:37,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:37,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:37,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569334561] [2021-10-29 05:51:37,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569334561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:37,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:37,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:51:37,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168226678] [2021-10-29 05:51:37,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:37,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:37,212 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:37,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:37,236 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-10-29 05:51:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-29 05:51:37,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:37,238 INFO L225 Difference]: With dead ends: 93 [2021-10-29 05:51:37,239 INFO L226 Difference]: Without dead ends: 93 [2021-10-29 05:51:37,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:37,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-29 05:51:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-29 05:51:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.903225806451613) internal successors, (118), 62 states have internal predecessors, (118), 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) [2021-10-29 05:51:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-10-29 05:51:37,249 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-10-29 05:51:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:37,250 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-10-29 05:51:37,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-10-29 05:51:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:51:37,252 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:37,252 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:37,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:37,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:37,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-10-29 05:51:37,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:37,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977014199] [2021-10-29 05:51:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:37,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:37,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:37,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:37,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:51:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:37,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:51:37,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:37,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:37,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:37,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977014199] [2021-10-29 05:51:37,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977014199] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:37,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:37,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:51:37,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202516256] [2021-10-29 05:51:37,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:37,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:37,732 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:37,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:37,766 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2021-10-29 05:51:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-29 05:51:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:37,771 INFO L225 Difference]: With dead ends: 94 [2021-10-29 05:51:37,773 INFO L226 Difference]: Without dead ends: 94 [2021-10-29 05:51:37,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-29 05:51:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-10-29 05:51:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.89010989010989) internal successors, (172), 91 states have internal predecessors, (172), 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) [2021-10-29 05:51:37,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-10-29 05:51:37,796 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-10-29 05:51:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:37,797 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-10-29 05:51:37,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-10-29 05:51:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:51:37,800 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:37,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:37,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:38,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:38,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-10-29 05:51:38,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:38,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932713411] [2021-10-29 05:51:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:38,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:38,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:38,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:38,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:51:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:38,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:51:38,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:38,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:38,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:38,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932713411] [2021-10-29 05:51:38,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932713411] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:38,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:38,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:51:38,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416910462] [2021-10-29 05:51:38,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:38,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:38,320 INFO L87 Difference]: Start difference. First operand 92 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:38,332 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-10-29 05:51:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-29 05:51:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:38,334 INFO L225 Difference]: With dead ends: 96 [2021-10-29 05:51:38,335 INFO L226 Difference]: Without dead ends: 96 [2021-10-29 05:51:38,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-29 05:51:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-10-29 05:51:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.8494623655913978) internal successors, (172), 93 states have internal predecessors, (172), 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) [2021-10-29 05:51:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-10-29 05:51:38,344 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-10-29 05:51:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:38,345 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-10-29 05:51:38,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:38,345 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-10-29 05:51:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:51:38,346 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:38,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:38,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-29 05:51:38,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:38,558 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-10-29 05:51:38,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:38,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897130436] [2021-10-29 05:51:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:38,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:38,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:38,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:38,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:51:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:51:38,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:51:38,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:51:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:38,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:51:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:51:38,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:51:38,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897130436] [2021-10-29 05:51:38,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897130436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:51:38,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:51:38,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:51:38,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523247983] [2021-10-29 05:51:38,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:51:38,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:51:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:51:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:38,826 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:51:38,845 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2021-10-29 05:51:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:51:38,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-10-29 05:51:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:51:38,848 INFO L225 Difference]: With dead ends: 127 [2021-10-29 05:51:38,848 INFO L226 Difference]: Without dead ends: 127 [2021-10-29 05:51:38,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:51:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-29 05:51:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-29 05:51:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 124 states have internal predecessors, (227), 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) [2021-10-29 05:51:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-10-29 05:51:38,859 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-10-29 05:51:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:51:38,859 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-10-29 05:51:38,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-10-29 05:51:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-10-29 05:51:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:51:38,861 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:51:38,861 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:38,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:39,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:39,073 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-29 05:51:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:51:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-10-29 05:51:39,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:51:39,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876577343] [2021-10-29 05:51:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:51:39,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:51:39,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:51:39,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:51:39,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:51:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:51:39,192 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:51:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:51:39,298 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:51:39,299 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:51:39,300 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:51:39,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:51:39,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:51:39,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:51:39,504 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:51:39,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:51:39,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:51:39 BoogieIcfgContainer [2021-10-29 05:51:39,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:51:39,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:51:39,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:51:39,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:51:39,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:51:35" (3/4) ... [2021-10-29 05:51:39,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:51:39,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:51:39,553 INFO L168 Benchmark]: Toolchain (without parser) took 4904.47 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 59.4 MB in the beginning and 66.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:39,554 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:39,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.00 ms. Allocated memory is still 77.6 MB. Free memory was 59.2 MB in the beginning and 60.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:39,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 58.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:39,555 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory is still 77.6 MB. Free memory was 58.4 MB in the beginning and 57.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:39,556 INFO L168 Benchmark]: RCFGBuilder took 622.35 ms. Allocated memory is still 77.6 MB. Free memory was 57.0 MB in the beginning and 43.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:39,557 INFO L168 Benchmark]: TraceAbstraction took 3826.45 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 42.6 MB in the beginning and 66.0 MB in the end (delta: -23.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:51:39,557 INFO L168 Benchmark]: Witness Printer took 4.67 ms. Allocated memory is still 109.1 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:51:39,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.00 ms. Allocated memory is still 77.6 MB. Free memory was 59.2 MB in the beginning and 60.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.93 ms. Allocated memory is still 77.6 MB. Free memory was 60.3 MB in the beginning and 58.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory is still 77.6 MB. Free memory was 58.4 MB in the beginning and 57.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 622.35 ms. Allocated memory is still 77.6 MB. Free memory was 57.0 MB in the beginning and 43.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3826.45 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 42.6 MB in the beginning and 66.0 MB in the end (delta: -23.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.67 ms. Allocated memory is still 109.1 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 219]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 219. Possible FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND TRUE p4 != 0 [L101] lk4 = 1 [L104] COND TRUE p5 != 0 [L105] lk5 = 1 [L108] COND TRUE p6 != 0 [L109] lk6 = 1 [L112] COND TRUE p7 != 0 [L113] lk7 = 1 [L116] COND TRUE p8 != 0 [L117] lk8 = 1 [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND TRUE p10 != 0 [L125] lk10 = 1 [L128] COND FALSE !(p11 != 0) [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L219] reach_error() - UnprovableResult [Line: 6]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 364 SDslu, 282 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 317 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:51:39,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0cecd63-b4bd-44d8-ae38-cc2853b0a0a5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...