./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs --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 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:44:14,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:44:14,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:44:14,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:44:14,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:44:14,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:44:14,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:44:14,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:44:14,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:44:14,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:44:14,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:44:14,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:44:14,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:44:14,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:44:14,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:44:14,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:44:14,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:44:14,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:44:14,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:44:14,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:44:14,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:44:14,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:44:14,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:44:14,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:44:14,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:44:14,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:44:14,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:44:14,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:44:14,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:44:14,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:44:14,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:44:14,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:44:14,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:44:14,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:44:14,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:44:14,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:44:14,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:44:14,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:44:14,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:44:14,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:44:14,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:44:14,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-16 02:44:14,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:44:14,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:44:14,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:44:14,645 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:44:14,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:44:14,646 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:44:14,646 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:44:14,646 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:44:14,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:44:14,647 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:44:14,648 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:44:14,648 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:44:14,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:44:14,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:44:14,649 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:44:14,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-16 02:44:14,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-16 02:44:14,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:44:14,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:44:14,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:44:14,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:44:14,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:44:14,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:44:14,652 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-16 02:44:14,652 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-16 02:44:14,653 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-16 02:44:14,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:44:14,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:44:14,655 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:44:14,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:44:14,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:44:14,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:44:14,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:14,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:44:14,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:44:14,658 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:44:14,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:44:14,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:44:14,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:44:14,659 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_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2021-10-16 02:44:14,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:44:14,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:44:14,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:44:14,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:44:14,982 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:44:14,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/locks/test_locks_6.c [2021-10-16 02:44:15,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/data/4fe8e7777/fb28c7aabbbb408cac6e7ce2dba6b8a2/FLAGbd0bc5e7c [2021-10-16 02:44:15,539 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:44:15,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/sv-benchmarks/c/locks/test_locks_6.c [2021-10-16 02:44:15,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/data/4fe8e7777/fb28c7aabbbb408cac6e7ce2dba6b8a2/FLAGbd0bc5e7c [2021-10-16 02:44:15,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/data/4fe8e7777/fb28c7aabbbb408cac6e7ce2dba6b8a2 [2021-10-16 02:44:15,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:44:15,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:44:15,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:15,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:44:15,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:44:15,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:15" (1/1) ... [2021-10-16 02:44:15,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ff83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:15, skipping insertion in model container [2021-10-16 02:44:15,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:15" (1/1) ... [2021-10-16 02:44:15,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:44:15,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:44:16,135 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_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-16 02:44:16,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:16,156 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:44:16,177 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_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-16 02:44:16,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:16,191 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:44:16,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16 WrapperNode [2021-10-16 02:44:16,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:16,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:16,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:44:16,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:44:16,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:16,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:44:16,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:44:16,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:44:16,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:44:16,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:44:16,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:44:16,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:44:16,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (1/1) ... [2021-10-16 02:44:16,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:16,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:44:16,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:44:16,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:44:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:44:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:44:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:44:16,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:44:16,893 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:44:16,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:16 BoogieIcfgContainer [2021-10-16 02:44:16,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:44:16,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:44:16,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:44:16,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:44:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:44:15" (1/3) ... [2021-10-16 02:44:16,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432e9979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:16, skipping insertion in model container [2021-10-16 02:44:16,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:16" (2/3) ... [2021-10-16 02:44:16,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432e9979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:16, skipping insertion in model container [2021-10-16 02:44:16,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:16" (3/3) ... [2021-10-16 02:44:16,905 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2021-10-16 02:44:16,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:44:16,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:44:16,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:44:16,978 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, mConcurrency=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 [2021-10-16 02:44:16,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:44:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 20 states have internal predecessors, (34), 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) [2021-10-16 02:44:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:44:17,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:44:17,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,020 INFO L82 PathProgramCache]: Analyzing trace with hash 4929034, now seen corresponding path program 1 times [2021-10-16 02:44:17,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610389988] [2021-10-16 02:44:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:17,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:17,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610389988] [2021-10-16 02:44:17,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610389988] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:17,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:17,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:44:17,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317227796] [2021-10-16 02:44:17,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:44:17,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:44:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:44:17,281 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 20 states have internal predecessors, (34), 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) [2021-10-16 02:44:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:17,294 INFO L93 Difference]: Finished difference Result 21 states and 32 transitions. [2021-10-16 02:44:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:44:17,296 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 [2021-10-16 02:44:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:17,306 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:44:17,307 INFO L226 Difference]: Without dead ends: 20 [2021-10-16 02:44:17,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:44:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-16 02:44:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-16 02:44:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 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) [2021-10-16 02:44:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 31 transitions. [2021-10-16 02:44:17,356 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 31 transitions. Word has length 4 [2021-10-16 02:44:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:17,357 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 31 transitions. [2021-10-16 02:44:17,358 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) [2021-10-16 02:44:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 31 transitions. [2021-10-16 02:44:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:44:17,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:44:17,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:44:17,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,371 INFO L82 PathProgramCache]: Analyzing trace with hash 149031945, now seen corresponding path program 1 times [2021-10-16 02:44:17,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862880415] [2021-10-16 02:44:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:17,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:17,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862880415] [2021-10-16 02:44:17,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862880415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:17,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:17,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:44:17,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218337401] [2021-10-16 02:44:17,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:17,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:17,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:17,480 INFO L87 Difference]: Start difference. First operand 20 states and 31 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) [2021-10-16 02:44:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:17,484 INFO L93 Difference]: Finished difference Result 19 states and 30 transitions. [2021-10-16 02:44:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:17,485 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 [2021-10-16 02:44:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:17,486 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:44:17,486 INFO L226 Difference]: Without dead ends: 17 [2021-10-16 02:44:17,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-16 02:44:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-16 02:44:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 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) [2021-10-16 02:44:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 28 transitions. [2021-10-16 02:44:17,492 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 28 transitions. Word has length 5 [2021-10-16 02:44:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:17,492 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 28 transitions. [2021-10-16 02:44:17,493 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) [2021-10-16 02:44:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 28 transitions. [2021-10-16 02:44:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:44:17,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,494 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:44:17,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:44:17,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash 328829427, now seen corresponding path program 1 times [2021-10-16 02:44:17,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860300681] [2021-10-16 02:44:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:17,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:17,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860300681] [2021-10-16 02:44:17,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860300681] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:17,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:17,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:17,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737474583] [2021-10-16 02:44:17,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:17,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:17,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,620 INFO L87 Difference]: Start difference. First operand 17 states and 28 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) [2021-10-16 02:44:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:17,658 INFO L93 Difference]: Finished difference Result 31 states and 50 transitions. [2021-10-16 02:44:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:17,660 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 [2021-10-16 02:44:17,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:17,662 INFO L225 Difference]: With dead ends: 31 [2021-10-16 02:44:17,662 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 02:44:17,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 02:44:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-10-16 02:44:17,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-10-16 02:44:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2021-10-16 02:44:17,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2021-10-16 02:44:17,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:17,675 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2021-10-16 02:44:17,677 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) [2021-10-16 02:44:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2021-10-16 02:44:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:44:17,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:17,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:44:17,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1603992289, now seen corresponding path program 1 times [2021-10-16 02:44:17,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714200900] [2021-10-16 02:44:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:17,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:17,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714200900] [2021-10-16 02:44:17,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714200900] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:17,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:17,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:17,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980329532] [2021-10-16 02:44:17,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:17,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,743 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:17,763 INFO L93 Difference]: Finished difference Result 29 states and 45 transitions. [2021-10-16 02:44:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:44:17,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:17,765 INFO L225 Difference]: With dead ends: 29 [2021-10-16 02:44:17,765 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 02:44:17,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 02:44:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-10-16 02:44:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2021-10-16 02:44:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2021-10-16 02:44:17,769 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 7 [2021-10-16 02:44:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:17,770 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-10-16 02:44:17,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 26 transitions. [2021-10-16 02:44:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:44:17,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:17,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:44:17,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1815631608, now seen corresponding path program 1 times [2021-10-16 02:44:17,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148582054] [2021-10-16 02:44:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:17,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:17,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148582054] [2021-10-16 02:44:17,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148582054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:17,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:17,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:17,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157843515] [2021-10-16 02:44:17,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:17,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,823 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-16 02:44:17,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:17,841 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2021-10-16 02:44:17,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:17,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:44:17,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:17,843 INFO L225 Difference]: With dead ends: 27 [2021-10-16 02:44:17,843 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:44:17,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:44:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2021-10-16 02:44:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-10-16 02:44:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2021-10-16 02:44:17,847 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 8 [2021-10-16 02:44:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:17,847 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-10-16 02:44:17,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-16 02:44:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2021-10-16 02:44:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:44:17,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:17,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:44:17,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash -449789674, now seen corresponding path program 1 times [2021-10-16 02:44:17,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313492131] [2021-10-16 02:44:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:17,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:17,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313492131] [2021-10-16 02:44:17,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313492131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:17,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:17,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:17,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833824903] [2021-10-16 02:44:17,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:17,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,897 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:17,914 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-10-16 02:44:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:17,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 02:44:17,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:17,915 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:44:17,916 INFO L226 Difference]: Without dead ends: 25 [2021-10-16 02:44:17,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-16 02:44:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-10-16 02:44:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-10-16 02:44:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2021-10-16 02:44:17,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 9 [2021-10-16 02:44:17,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:17,923 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 24 transitions. [2021-10-16 02:44:17,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2021-10-16 02:44:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:44:17,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:17,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:17,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:44:17,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:17,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:17,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1058362339, now seen corresponding path program 1 times [2021-10-16 02:44:17,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:17,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803573209] [2021-10-16 02:44:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:17,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:18,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:18,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803573209] [2021-10-16 02:44:18,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803573209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:18,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:18,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:18,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375032210] [2021-10-16 02:44:18,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:18,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:18,014 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:18,028 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2021-10-16 02:44:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:44:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:18,030 INFO L225 Difference]: With dead ends: 23 [2021-10-16 02:44:18,030 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:44:18,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:44:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-10-16 02:44:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2021-10-16 02:44:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-10-16 02:44:18,033 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 10 [2021-10-16 02:44:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:18,034 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-10-16 02:44:18,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-10-16 02:44:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:44:18,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:18,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:18,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:44:18,036 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-16 02:44:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1550721867, now seen corresponding path program 1 times [2021-10-16 02:44:18,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:18,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167793962] [2021-10-16 02:44:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:18,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:18,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:44:18,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167793962] [2021-10-16 02:44:18,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167793962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:18,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:18,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:44:18,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732413962] [2021-10-16 02:44:18,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:44:18,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:44:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:44:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:18,078 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-16 02:44:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:18,093 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-10-16 02:44:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:44:18,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-16 02:44:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:18,094 INFO L225 Difference]: With dead ends: 17 [2021-10-16 02:44:18,094 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:44:18,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:44:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:44:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:44:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:44:18,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-16 02:44:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:18,096 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:44:18,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-16 02:44:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:44:18,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:44:18,099 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:44:18,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-16 02:44:18,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:44:18,105 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:44:18,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:44:18 BoogieIcfgContainer [2021-10-16 02:44:18,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:44:18,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:44:18,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:44:18,109 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:44:18,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:16" (3/4) ... [2021-10-16 02:44:18,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:44:18,124 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-16 02:44:18,124 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-16 02:44:18,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:44:18,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:44:18,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:44:18,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:44:18,172 INFO L168 Benchmark]: Toolchain (without parser) took 2248.23 ms. Allocated memory was 123.7 MB in the beginning and 153.1 MB in the end (delta: 29.4 MB). Free memory was 95.0 MB in the beginning and 85.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,173 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 123.7 MB. Free memory was 76.7 MB in the beginning and 76.6 MB in the end (delta: 63.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:18,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.34 ms. Allocated memory is still 123.7 MB. Free memory was 94.7 MB in the beginning and 98.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.01 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 96.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,175 INFO L168 Benchmark]: Boogie Preprocessor took 25.74 ms. Allocated memory is still 123.7 MB. Free memory was 96.8 MB in the beginning and 95.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,175 INFO L168 Benchmark]: RCFGBuilder took 617.89 ms. Allocated memory is still 123.7 MB. Free memory was 95.6 MB in the beginning and 79.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,176 INFO L168 Benchmark]: TraceAbstraction took 1209.98 ms. Allocated memory was 123.7 MB in the beginning and 153.1 MB in the end (delta: 29.4 MB). Free memory was 79.4 MB in the beginning and 89.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,176 INFO L168 Benchmark]: Witness Printer took 62.52 ms. Allocated memory is still 153.1 MB. Free memory was 89.0 MB in the beginning and 85.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:18,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 123.7 MB. Free memory was 76.7 MB in the beginning and 76.6 MB in the end (delta: 63.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.34 ms. Allocated memory is still 123.7 MB. Free memory was 94.7 MB in the beginning and 98.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.01 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 96.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.74 ms. Allocated memory is still 123.7 MB. Free memory was 96.8 MB in the beginning and 95.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 617.89 ms. Allocated memory is still 123.7 MB. Free memory was 95.6 MB in the beginning and 79.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1209.98 ms. Allocated memory was 123.7 MB in the beginning and 153.1 MB in the end (delta: 29.4 MB). Free memory was 79.4 MB in the beginning and 89.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 62.52 ms. Allocated memory is still 153.1 MB. Free memory was 89.0 MB in the beginning and 85.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1135.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 30.8ms, AutomataDifference: 205.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 139 SDslu, 191 SDs, 0 SdLazy, 62 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.4ms SsaConstructionTime, 133.5ms SatisfiabilityAnalysisTime, 413.0ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 02:44:18,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4502df4-0d7f-4b4b-8147-0013a8cd4fc9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...