./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-e943c26 [2021-10-20 05:27:33,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:27:33,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:27:33,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:27:33,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:27:33,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:27:33,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:27:33,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:27:33,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:27:33,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:27:33,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:27:33,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:27:33,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:27:33,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:27:33,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:27:33,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:27:33,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:27:33,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:27:33,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:27:33,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:27:33,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:27:33,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:27:33,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:27:33,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:27:33,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:27:33,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:27:33,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:27:33,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:27:33,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:27:33,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:27:33,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:27:33,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:27:33,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:27:33,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:27:33,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:27:33,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:27:33,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:27:33,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:27:33,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:27:33,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:27:33,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:27:33,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 05:27:33,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:27:33,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:27:33,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:27:33,572 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:27:33,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:27:33,573 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:27:33,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:27:33,574 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:27:33,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:27:33,574 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:27:33,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:27:33,575 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:27:33,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:27:33,575 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:27:33,576 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:27:33,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:27:33,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:27:33,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:27:33,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:27:33,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:27:33,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:27:33,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:27:33,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:27:33,580 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:27:33,581 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:27:33,581 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:27:33,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:27:33,583 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:27:33,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:27:33,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:27:33,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:27:33,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:27:33,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:27:33,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:27:33,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:27:33,585 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:27:33,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:27:33,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:27:33,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:27:33,586 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_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-10-20 05:27:33,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:27:33,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:27:33,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:27:33,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:27:33,889 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:27:33,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-20 05:27:33,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/94c9cf809/501094f5f04c45fca2a86a0f3f8ed803/FLAGdd163dc73 [2021-10-20 05:27:34,421 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:27:34,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-20 05:27:34,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/94c9cf809/501094f5f04c45fca2a86a0f3f8ed803/FLAGdd163dc73 [2021-10-20 05:27:34,781 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/94c9cf809/501094f5f04c45fca2a86a0f3f8ed803 [2021-10-20 05:27:34,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:27:34,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:27:34,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:27:34,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:27:34,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:27:34,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:27:34" (1/1) ... [2021-10-20 05:27:34,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d779112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:34, skipping insertion in model container [2021-10-20 05:27:34,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:27:34" (1/1) ... [2021-10-20 05:27:34,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:27:34,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:27:35,068 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_5e53c304-349e-4739-9d27-101ee372a6de/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-20 05:27:35,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:27:35,082 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:27:35,113 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_5e53c304-349e-4739-9d27-101ee372a6de/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-20 05:27:35,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:27:35,126 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:27:35,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35 WrapperNode [2021-10-20 05:27:35,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:27:35,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:27:35,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:27:35,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:27:35,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:27:35,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:27:35,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:27:35,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:27:35,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:27:35,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:27:35,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:27:35,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:27:35,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (1/1) ... [2021-10-20 05:27:35,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:27:35,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:27:35,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:27:35,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:27:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:27:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:27:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:27:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:27:36,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:27:36,012 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-20 05:27:36,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:27:36 BoogieIcfgContainer [2021-10-20 05:27:36,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:27:36,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:27:36,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:27:36,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:27:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:27:34" (1/3) ... [2021-10-20 05:27:36,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dac2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:27:36, skipping insertion in model container [2021-10-20 05:27:36,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:35" (2/3) ... [2021-10-20 05:27:36,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dac2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:27:36, skipping insertion in model container [2021-10-20 05:27:36,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:27:36" (3/3) ... [2021-10-20 05:27:36,027 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-20 05:27:36,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:27:36,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-20 05:27:36,099 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:27:36,109 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:27:36,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-20 05:27:36,129 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) [2021-10-20 05:27:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 05:27:36,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:36,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 05:27:36,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash 9113736, now seen corresponding path program 1 times [2021-10-20 05:27:36,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:27:36,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880102087] [2021-10-20 05:27:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:36,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:27:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:36,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:27:36,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880102087] [2021-10-20 05:27:36,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880102087] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:36,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:36,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 05:27:36,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754519347] [2021-10-20 05:27:36,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:27:36,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:27:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:27:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:27:36,346 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) [2021-10-20 05:27:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:36,363 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2021-10-20 05:27:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:27:36,365 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 [2021-10-20 05:27:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:36,374 INFO L225 Difference]: With dead ends: 37 [2021-10-20 05:27:36,374 INFO L226 Difference]: Without dead ends: 36 [2021-10-20 05:27:36,376 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 [2021-10-20 05:27:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-20 05:27:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-20 05:27:36,402 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) [2021-10-20 05:27:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-10-20 05:27:36,405 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2021-10-20 05:27:36,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:36,405 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-10-20 05:27:36,406 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) [2021-10-20 05:27:36,406 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-10-20 05:27:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:27:36,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:36,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:27:36,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:27:36,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:36,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:36,408 INFO L82 PathProgramCache]: Analyzing trace with hash 274635153, now seen corresponding path program 1 times [2021-10-20 05:27:36,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:27:36,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194786668] [2021-10-20 05:27:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:36,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:27:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:36,470 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:27:36,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194786668] [2021-10-20 05:27:36,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194786668] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:36,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:36,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-20 05:27:36,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688498816] [2021-10-20 05:27:36,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:27:36,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:27:36,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:27:36,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:36,478 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) [2021-10-20 05:27:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:36,492 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2021-10-20 05:27:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:27:36,494 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 [2021-10-20 05:27:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:36,495 INFO L225 Difference]: With dead ends: 35 [2021-10-20 05:27:36,496 INFO L226 Difference]: Without dead ends: 33 [2021-10-20 05:27:36,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-20 05:27:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-20 05:27:36,504 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) [2021-10-20 05:27:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2021-10-20 05:27:36,506 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2021-10-20 05:27:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:36,506 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2021-10-20 05:27:36,506 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) [2021-10-20 05:27:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2021-10-20 05:27:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:27:36,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:36,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:27:36,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 05:27:36,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:36,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:36,509 INFO L82 PathProgramCache]: Analyzing trace with hash -67997349, now seen corresponding path program 1 times [2021-10-20 05:27:36,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:27:36,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356011688] [2021-10-20 05:27:36,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:36,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:27:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:36,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:27:36,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356011688] [2021-10-20 05:27:36,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356011688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:36,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:36,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-20 05:27:36,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627266107] [2021-10-20 05:27:36,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:27:36,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:27:36,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:27:36,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:27:36,615 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) [2021-10-20 05:27:36,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:36,657 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2021-10-20 05:27:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:27:36,657 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 [2021-10-20 05:27:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:36,659 INFO L225 Difference]: With dead ends: 63 [2021-10-20 05:27:36,659 INFO L226 Difference]: Without dead ends: 63 [2021-10-20 05:27:36,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:27:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-20 05:27:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2021-10-20 05:27:36,664 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) [2021-10-20 05:27:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-10-20 05:27:36,665 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-10-20 05:27:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:36,665 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-10-20 05:27:36,665 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) [2021-10-20 05:27:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-10-20 05:27:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:27:36,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:36,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:27:36,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 05:27:36,667 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:36,667 INFO L82 PathProgramCache]: Analyzing trace with hash -67990157, now seen corresponding path program 1 times [2021-10-20 05:27:36,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:27:36,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594174570] [2021-10-20 05:27:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:36,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:27:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:27:36,696 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:27:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:27:36,772 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:27:36,773 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:27:36,773 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:27:36,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:27:36,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-20 05:27:36,781 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:27:36,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:27:36 BoogieIcfgContainer [2021-10-20 05:27:36,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:27:36,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:27:36,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:27:36,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:27:36,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:27:36" (3/4) ... [2021-10-20 05:27:36,808 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:27:36,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:27:36,810 INFO L168 Benchmark]: Toolchain (without parser) took 2024.30 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 49.9 MB in the beginning and 45.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:36,811 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:27:36,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.78 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 49.7 MB in the beginning and 86.6 MB in the end (delta: -36.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:36,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 84.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:36,813 INFO L168 Benchmark]: Boogie Preprocessor took 29.09 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 83.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:27:36,813 INFO L168 Benchmark]: RCFGBuilder took 814.80 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 83.2 MB in the end (delta: 56.1 kB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:36,814 INFO L168 Benchmark]: TraceAbstraction took 785.85 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 46.2 MB in the end (delta: 36.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:36,814 INFO L168 Benchmark]: Witness Printer took 3.21 ms. Allocated memory is still 111.1 MB. Free memory is still 45.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:27:36,818 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 83.9 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.78 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 49.7 MB in the beginning and 86.6 MB in the end (delta: -36.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 84.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.09 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 83.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 814.80 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 83.2 MB in the end (delta: 56.1 kB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 785.85 ms. Allocated memory is still 111.1 MB. Free memory was 82.6 MB in the beginning and 46.2 MB in the end (delta: 36.3 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.21 ms. Allocated memory is still 111.1 MB. Free memory is still 45.6 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 682.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 11.3ms, AutomataDifference: 119.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 183 SDtfs, 114 SDslu, 109 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.6ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.3ms SsaConstructionTime, 104.8ms SatisfiabilityAnalysisTime, 163.3ms 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 [2021-10-20 05:27:36,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/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-e943c26 [2021-10-20 05:27:39,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:27:39,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:27:39,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:27:39,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:27:39,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:27:39,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:27:39,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:27:39,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:27:39,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:27:39,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:27:39,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:27:39,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:27:39,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:27:39,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:27:39,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:27:39,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:27:39,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:27:39,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:27:39,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:27:39,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:27:39,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:27:39,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:27:39,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:27:39,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:27:39,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:27:39,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:27:39,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:27:39,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:27:39,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:27:39,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:27:39,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:27:39,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:27:39,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:27:39,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:27:39,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:27:39,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:27:39,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:27:39,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:27:39,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:27:39,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:27:39,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-20 05:27:39,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:27:39,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:27:39,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:27:39,490 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:27:39,490 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:27:39,490 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:27:39,490 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:27:39,491 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:27:39,491 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:27:39,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:27:39,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:27:39,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:27:39,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:27:39,494 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:27:39,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:27:39,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:27:39,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:27:39,495 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:27:39,495 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:27:39,495 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:27:39,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:27:39,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:27:39,496 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:27:39,496 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:27:39,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:27:39,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:27:39,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:27:39,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:27:39,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:27:39,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:27:39,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:27:39,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:27:39,498 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:27:39,498 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:27:39,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:27:39,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:27:39,499 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_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-10-20 05:27:39,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:27:39,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:27:39,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:27:39,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:27:39,897 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:27:39,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-20 05:27:39,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/9e72b1c4f/cb7c1915e545418688fcf687d208003b/FLAG7214cdf40 [2021-10-20 05:27:40,480 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:27:40,492 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-20 05:27:40,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/9e72b1c4f/cb7c1915e545418688fcf687d208003b/FLAG7214cdf40 [2021-10-20 05:27:40,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/data/9e72b1c4f/cb7c1915e545418688fcf687d208003b [2021-10-20 05:27:40,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:27:40,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:27:40,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:27:40,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:27:40,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:27:40,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:27:40" (1/1) ... [2021-10-20 05:27:40,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e4e7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:40, skipping insertion in model container [2021-10-20 05:27:40,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:27:40" (1/1) ... [2021-10-20 05:27:40,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:27:40,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:27:41,063 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_5e53c304-349e-4739-9d27-101ee372a6de/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-20 05:27:41,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:27:41,095 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:27:41,130 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_5e53c304-349e-4739-9d27-101ee372a6de/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-20 05:27:41,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:27:41,175 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:27:41,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41 WrapperNode [2021-10-20 05:27:41,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:27:41,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:27:41,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:27:41,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:27:41,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:27:41,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:27:41,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:27:41,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:27:41,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:27:41,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:27:41,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:27:41,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:27:41,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (1/1) ... [2021-10-20 05:27:41,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:27:41,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:27:41,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:27:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:27:41,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:27:41,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:27:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 05:27:41,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:27:41,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:27:41,895 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-20 05:27:41,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:27:41 BoogieIcfgContainer [2021-10-20 05:27:41,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:27:41,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:27:41,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:27:41,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:27:41,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:27:40" (1/3) ... [2021-10-20 05:27:41,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca9ea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:27:41, skipping insertion in model container [2021-10-20 05:27:41,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:27:41" (2/3) ... [2021-10-20 05:27:41,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca9ea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:27:41, skipping insertion in model container [2021-10-20 05:27:41,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:27:41" (3/3) ... [2021-10-20 05:27:41,910 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-20 05:27:41,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:27:41,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-20 05:27:41,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:27:41,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:27:41,985 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-20 05:27:42,004 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) [2021-10-20 05:27:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:27:42,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:42,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:27:42,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:42,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:42,018 INFO L82 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-10-20 05:27:42,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:42,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460286160] [2021-10-20 05:27:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:42,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:42,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:42,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:42,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:27:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:42,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 05:27:42,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:27:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:42,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:27:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:42,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:27:42,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460286160] [2021-10-20 05:27:42,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460286160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:42,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:42,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:27:42,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214801571] [2021-10-20 05:27:42,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 05:27:42,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:27:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 05:27:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:27:42,245 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) [2021-10-20 05:27:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:42,269 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-10-20 05:27:42,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 05:27:42,271 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 [2021-10-20 05:27:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:42,281 INFO L225 Difference]: With dead ends: 53 [2021-10-20 05:27:42,281 INFO L226 Difference]: Without dead ends: 51 [2021-10-20 05:27:42,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 05:27:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-20 05:27:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-20 05:27:42,322 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) [2021-10-20 05:27:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-10-20 05:27:42,327 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-10-20 05:27:42,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:42,327 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-10-20 05:27:42,328 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) [2021-10-20 05:27:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-10-20 05:27:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:27:42,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:42,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:27:42,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:42,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:42,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:42,541 INFO L82 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-10-20 05:27:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:42,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454712375] [2021-10-20 05:27:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:42,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:42,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:42,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:42,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:27:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:27:42,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:27:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:42,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:27:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:42,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:27:42,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454712375] [2021-10-20 05:27:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454712375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:42,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:42,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:27:42,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913762084] [2021-10-20 05:27:42,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:27:42,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:27:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:27:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:42,690 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) [2021-10-20 05:27:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:42,711 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-10-20 05:27:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:27:42,713 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 [2021-10-20 05:27:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:42,715 INFO L225 Difference]: With dead ends: 50 [2021-10-20 05:27:42,716 INFO L226 Difference]: Without dead ends: 48 [2021-10-20 05:27:42,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-20 05:27:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-20 05:27:42,726 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) [2021-10-20 05:27:42,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-10-20 05:27:42,734 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-10-20 05:27:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:42,734 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-10-20 05:27:42,735 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) [2021-10-20 05:27:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-10-20 05:27:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:27:42,736 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:42,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:27:42,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:42,948 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-10-20 05:27:42,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:42,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701023301] [2021-10-20 05:27:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:42,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:42,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:42,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:42,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:27:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:43,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:27:43,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:27:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:43,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:27:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:43,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:27:43,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701023301] [2021-10-20 05:27:43,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701023301] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:43,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:43,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:27:43,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480500345] [2021-10-20 05:27:43,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:27:43,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:27:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:27:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:43,196 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) [2021-10-20 05:27:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:43,225 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-10-20 05:27:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:27:43,226 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 [2021-10-20 05:27:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:43,228 INFO L225 Difference]: With dead ends: 93 [2021-10-20 05:27:43,229 INFO L226 Difference]: Without dead ends: 93 [2021-10-20 05:27:43,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-20 05:27:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-20 05:27:43,247 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) [2021-10-20 05:27:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-10-20 05:27:43,249 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-10-20 05:27:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:43,249 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-10-20 05:27:43,250 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) [2021-10-20 05:27:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-10-20 05:27:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:27:43,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:43,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:27:43,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:43,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:43,462 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-10-20 05:27:43,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:43,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121137209] [2021-10-20 05:27:43,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:43,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:43,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:43,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:43,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:27:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:43,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:27:43,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:27:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:43,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:27:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:43,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:27:43,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121137209] [2021-10-20 05:27:43,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121137209] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:43,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:43,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:27:43,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863285563] [2021-10-20 05:27:43,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:27:43,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:27:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:27:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:43,709 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) [2021-10-20 05:27:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:43,726 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2021-10-20 05:27:43,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:27:43,727 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 [2021-10-20 05:27:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:43,729 INFO L225 Difference]: With dead ends: 94 [2021-10-20 05:27:43,729 INFO L226 Difference]: Without dead ends: 94 [2021-10-20 05:27:43,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-20 05:27:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-10-20 05:27:43,738 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) [2021-10-20 05:27:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-10-20 05:27:43,740 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-10-20 05:27:43,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:43,741 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-10-20 05:27:43,741 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) [2021-10-20 05:27:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-10-20 05:27:43,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:27:43,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:43,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:27:43,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:43,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:43,953 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:43,955 INFO L82 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-10-20 05:27:43,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:43,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710480834] [2021-10-20 05:27:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:43,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:43,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:43,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:27:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:44,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:27:44,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:27:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:44,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:27:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:44,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:27:44,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710480834] [2021-10-20 05:27:44,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710480834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:44,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:44,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:27:44,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357988218] [2021-10-20 05:27:44,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:27:44,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:27:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:27:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:44,227 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) [2021-10-20 05:27:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:44,239 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-10-20 05:27:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:27:44,240 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 [2021-10-20 05:27:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:44,241 INFO L225 Difference]: With dead ends: 96 [2021-10-20 05:27:44,243 INFO L226 Difference]: Without dead ends: 96 [2021-10-20 05:27:44,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-20 05:27:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-10-20 05:27:44,257 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) [2021-10-20 05:27:44,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-10-20 05:27:44,264 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-10-20 05:27:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:44,264 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-10-20 05:27:44,265 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) [2021-10-20 05:27:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-10-20 05:27:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:27:44,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:44,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:27:44,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:44,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:44,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:44,482 INFO L82 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-10-20 05:27:44,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:44,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827330427] [2021-10-20 05:27:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:44,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:44,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:44,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:27:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:27:44,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:27:44,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:27:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:44,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:27:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:27:44,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:27:44,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827330427] [2021-10-20 05:27:44,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827330427] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:27:44,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:27:44,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:27:44,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141641914] [2021-10-20 05:27:44,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:27:44,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:27:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:27:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:44,735 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) [2021-10-20 05:27:44,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:27:44,748 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2021-10-20 05:27:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:27:44,749 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 [2021-10-20 05:27:44,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:27:44,750 INFO L225 Difference]: With dead ends: 127 [2021-10-20 05:27:44,751 INFO L226 Difference]: Without dead ends: 127 [2021-10-20 05:27:44,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:27:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-20 05:27:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-20 05:27:44,759 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) [2021-10-20 05:27:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-10-20 05:27:44,761 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-10-20 05:27:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:27:44,761 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-10-20 05:27:44,762 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) [2021-10-20 05:27:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-10-20 05:27:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:27:44,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:27:44,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:27:44,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:44,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:44,974 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-20 05:27:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:27:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-10-20 05:27:44,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:27:44,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627655823] [2021-10-20 05:27:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:27:44,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:27:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:27:44,976 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:27:44,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:27:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:27:45,093 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:27:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:27:45,155 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:27:45,155 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:27:45,156 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:27:45,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:27:45,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-20 05:27:45,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:27:45,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:27:45,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:27:45 BoogieIcfgContainer [2021-10-20 05:27:45,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:27:45,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:27:45,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:27:45,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:27:45,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:27:41" (3/4) ... [2021-10-20 05:27:45,419 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:27:45,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:27:45,423 INFO L168 Benchmark]: Toolchain (without parser) took 4589.68 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 63.3 MB in the beginning and 49.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:45,425 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:27:45,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.95 ms. Allocated memory is still 79.7 MB. Free memory was 63.0 MB in the beginning and 62.5 MB in the end (delta: 466.2 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:45,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.46 ms. Allocated memory is still 79.7 MB. Free memory was 62.5 MB in the beginning and 60.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:27:45,430 INFO L168 Benchmark]: Boogie Preprocessor took 41.14 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 59.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:45,430 INFO L168 Benchmark]: RCFGBuilder took 617.74 ms. Allocated memory is still 79.7 MB. Free memory was 59.2 MB in the beginning and 45.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:45,431 INFO L168 Benchmark]: TraceAbstraction took 3512.73 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 45.1 MB in the beginning and 50.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:45,434 INFO L168 Benchmark]: Witness Printer took 5.70 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 49.6 MB in the end (delta: 649.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:27:45,436 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 79.7 MB. Free memory is still 59.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.95 ms. Allocated memory is still 79.7 MB. Free memory was 63.0 MB in the beginning and 62.5 MB in the end (delta: 466.2 kB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.46 ms. Allocated memory is still 79.7 MB. Free memory was 62.5 MB in the beginning and 60.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.14 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 59.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 617.74 ms. Allocated memory is still 79.7 MB. Free memory was 59.2 MB in the beginning and 45.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3512.73 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 45.1 MB in the beginning and 50.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 5.70 ms. Allocated memory is still 96.5 MB. Free memory was 50.2 MB in the beginning and 49.6 MB in the end (delta: 649.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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: 3400.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 16.5ms, AutomataDifference: 176.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 624 SDtfs, 364 SDslu, 282 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 103.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 108.3ms SsaConstructionTime, 129.0ms SatisfiabilityAnalysisTime, 828.0ms 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 [2021-10-20 05:27:45,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e53c304-349e-4739-9d27-101ee372a6de/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...