./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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE --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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE --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 [2021-10-24 10:17:28,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:17:28,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:17:28,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:17:28,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:17:28,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:17:28,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:17:28,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:17:28,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:17:28,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:17:28,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:17:28,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:17:28,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:17:28,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:17:28,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:17:28,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:17:28,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:17:28,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:17:28,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:17:28,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:17:28,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:17:28,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:17:28,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:17:28,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:17:28,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:17:28,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:17:28,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:17:28,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:17:28,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:17:28,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:17:28,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:17:28,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:17:28,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:17:28,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:17:28,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:17:28,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:17:28,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:17:28,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:17:28,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:17:28,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:17:28,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:17:28,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:17:28,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:17:28,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:17:28,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:17:28,844 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:17:28,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:17:28,844 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:17:28,844 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:17:28,845 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:17:28,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:17:28,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:17:28,850 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:17:28,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:17:28,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:17:28,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:17:28,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:17:28,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:17:28,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:17:28,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:17:28,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:17:28,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:17:28,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:17:28,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:17:28,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:17:28,855 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:17:28,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:17:28,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:17:28,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:17:28,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:17:28,857 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:17:28,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:17:28,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:17:28,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:17:28,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:28,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:17:28,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:17:28,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:17:28,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:17:28,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:17:28,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:17:28,860 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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-10-24 10:17:29,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:17:29,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:17:29,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:17:29,333 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:17:29,334 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:17:29,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-24 10:17:29,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/8c24d5853/0ff8433d7c6845a394d8c40760c15a05/FLAG678a01984 [2021-10-24 10:17:30,085 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:17:30,093 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-24 10:17:30,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/8c24d5853/0ff8433d7c6845a394d8c40760c15a05/FLAG678a01984 [2021-10-24 10:17:30,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/8c24d5853/0ff8433d7c6845a394d8c40760c15a05 [2021-10-24 10:17:30,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:17:30,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:17:30,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:30,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:17:30,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:17:30,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b49869c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30, skipping insertion in model container [2021-10-24 10:17:30,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:17:30,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:17:30,798 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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-24 10:17:30,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:30,812 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:17:30,845 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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-24 10:17:30,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:30,863 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:17:30,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30 WrapperNode [2021-10-24 10:17:30,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:30,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:30,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:17:30,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:17:30,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:30,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:17:30,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:17:30,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:17:30,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:30,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:31,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:17:31,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:17:31,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:17:31,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:17:31,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (1/1) ... [2021-10-24 10:17:31,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:31,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:31,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:17:31,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:17:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:17:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:17:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:17:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:17:31,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:17:31,871 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-24 10:17:31,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:31 BoogieIcfgContainer [2021-10-24 10:17:31,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:17:31,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:17:31,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:17:31,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:17:31,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:17:30" (1/3) ... [2021-10-24 10:17:31,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e22ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:31, skipping insertion in model container [2021-10-24 10:17:31,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:30" (2/3) ... [2021-10-24 10:17:31,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e22ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:31, skipping insertion in model container [2021-10-24 10:17:31,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:31" (3/3) ... [2021-10-24 10:17:31,885 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-24 10:17:31,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:17:31,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:17:31,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:17:31,955 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 [2021-10-24 10:17:31,956 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:17:31,974 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) [2021-10-24 10:17:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:17:31,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:31,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:17:31,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:32,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:32,015 INFO L82 PathProgramCache]: Analyzing trace with hash 9113736, now seen corresponding path program 1 times [2021-10-24 10:17:32,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:32,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463864568] [2021-10-24 10:17:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:32,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:32,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:32,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463864568] [2021-10-24 10:17:32,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463864568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:32,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:32,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 10:17:32,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983200657] [2021-10-24 10:17:32,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:17:32,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:17:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:17:32,282 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) [2021-10-24 10:17:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:32,304 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2021-10-24 10:17:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:17:32,306 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 [2021-10-24 10:17:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:32,324 INFO L225 Difference]: With dead ends: 37 [2021-10-24 10:17:32,324 INFO L226 Difference]: Without dead ends: 36 [2021-10-24 10:17:32,327 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 [2021-10-24 10:17:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-24 10:17:32,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-24 10:17:32,372 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) [2021-10-24 10:17:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-10-24 10:17:32,381 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2021-10-24 10:17:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:32,381 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-10-24 10:17:32,382 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) [2021-10-24 10:17:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-10-24 10:17:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:17:32,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:32,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:17:32,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:17:32,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 274635153, now seen corresponding path program 1 times [2021-10-24 10:17:32,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:32,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466363842] [2021-10-24 10:17:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:32,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:32,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:32,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466363842] [2021-10-24 10:17:32,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466363842] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:32,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:32,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-24 10:17:32,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606222360] [2021-10-24 10:17:32,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:32,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:32,502 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) [2021-10-24 10:17:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:32,510 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2021-10-24 10:17:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:32,510 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 [2021-10-24 10:17:32,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:32,511 INFO L225 Difference]: With dead ends: 35 [2021-10-24 10:17:32,512 INFO L226 Difference]: Without dead ends: 33 [2021-10-24 10:17:32,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:32,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-24 10:17:32,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-24 10:17:32,518 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) [2021-10-24 10:17:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2021-10-24 10:17:32,520 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2021-10-24 10:17:32,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:32,520 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2021-10-24 10:17:32,521 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) [2021-10-24 10:17:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2021-10-24 10:17:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:17:32,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:32,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:17:32,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:17:32,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash -67997349, now seen corresponding path program 1 times [2021-10-24 10:17:32,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:32,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083476931] [2021-10-24 10:17:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:32,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:32,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:17:32,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083476931] [2021-10-24 10:17:32,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083476931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:32,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:32,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:17:32,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746052153] [2021-10-24 10:17:32,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:17:32,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:17:32,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:17:32,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:17:32,618 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) [2021-10-24 10:17:32,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:32,672 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2021-10-24 10:17:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:17:32,674 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 [2021-10-24 10:17:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:32,681 INFO L225 Difference]: With dead ends: 63 [2021-10-24 10:17:32,681 INFO L226 Difference]: Without dead ends: 63 [2021-10-24 10:17:32,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:17:32,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-24 10:17:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2021-10-24 10:17:32,693 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) [2021-10-24 10:17:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-10-24 10:17:32,696 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-10-24 10:17:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:32,697 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-10-24 10:17:32,697 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) [2021-10-24 10:17:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-10-24 10:17:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:17:32,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:32,700 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:17:32,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:17:32,701 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash -67990157, now seen corresponding path program 1 times [2021-10-24 10:17:32,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:17:32,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582916934] [2021-10-24 10:17:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:32,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:17:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:32,769 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:17:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:32,842 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:17:32,843 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:17:32,844 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:17:32,847 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:17:32,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:17:32,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:17:32,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:32 BoogieIcfgContainer [2021-10-24 10:17:32,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:17:32,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:17:32,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:17:32,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:17:32,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:31" (3/4) ... [2021-10-24 10:17:32,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:17:32,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:17:32,929 INFO L168 Benchmark]: Toolchain (without parser) took 2484.93 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 57.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,931 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.15 ms. Allocated memory is still 94.4 MB. Free memory was 52.7 MB in the beginning and 69.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.25 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 66.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,934 INFO L168 Benchmark]: Boogie Preprocessor took 59.47 ms. Allocated memory is still 94.4 MB. Free memory was 66.9 MB in the beginning and 65.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,937 INFO L168 Benchmark]: RCFGBuilder took 872.77 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 38.8 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,939 INFO L168 Benchmark]: TraceAbstraction took 1034.48 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 38.4 MB in the beginning and 57.1 MB in the end (delta: -18.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:32,940 INFO L168 Benchmark]: Witness Printer took 5.43 ms. Allocated memory is still 113.2 MB. Free memory is still 57.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:32,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.15 ms. Allocated memory is still 94.4 MB. Free memory was 52.7 MB in the beginning and 69.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.25 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 66.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.47 ms. Allocated memory is still 94.4 MB. Free memory was 66.9 MB in the beginning and 65.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 872.77 ms. Allocated memory is still 94.4 MB. Free memory was 65.6 MB in the beginning and 38.8 MB in the end (delta: 26.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1034.48 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 38.4 MB in the beginning and 57.1 MB in the end (delta: -18.7 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.43 ms. Allocated memory is still 113.2 MB. Free memory is still 57.1 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: 907.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 15.1ms, AutomataDifference: 148.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 183 SDtfs, 114 SDslu, 109 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms 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: 56.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.3ms SsaConstructionTime, 152.7ms SatisfiabilityAnalysisTime, 187.5ms 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 [2021-10-24 10:17:33,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:17:36,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:17:36,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:17:36,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:17:36,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:17:36,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:17:36,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:17:36,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:17:36,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:17:36,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:17:36,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:17:36,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:17:36,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:17:36,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:17:36,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:17:36,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:17:36,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:17:36,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:17:36,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:17:36,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:17:36,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:17:36,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:17:36,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:17:36,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:17:36,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:17:36,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:17:36,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:17:36,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:17:36,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:17:36,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:17:36,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:17:36,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:17:36,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:17:36,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:17:36,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:17:36,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:17:36,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:17:36,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:17:36,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:17:36,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:17:36,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:17:36,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:17:36,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:17:36,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:17:36,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:17:36,164 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:17:36,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:17:36,165 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:17:36,165 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:17:36,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:17:36,166 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:17:36,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:17:36,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:17:36,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:17:36,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:17:36,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:17:36,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:17:36,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:17:36,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:17:36,171 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:17:36,171 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:17:36,172 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:17:36,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:17:36,172 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:17:36,173 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:17:36,173 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:17:36,173 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:17:36,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:17:36,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:17:36,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:17:36,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:17:36,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:36,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:17:36,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:17:36,177 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:17:36,177 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:17:36,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:17:36,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:17:36,178 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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-10-24 10:17:36,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:17:36,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:17:36,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:17:36,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:17:36,709 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:17:36,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-24 10:17:36,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/304d78143/2e17de94220b419b8763b7f5db79330d/FLAGe9857243c [2021-10-24 10:17:37,469 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:17:37,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-24 10:17:37,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/304d78143/2e17de94220b419b8763b7f5db79330d/FLAGe9857243c [2021-10-24 10:17:37,799 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/data/304d78143/2e17de94220b419b8763b7f5db79330d [2021-10-24 10:17:37,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:17:37,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:17:37,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:37,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:17:37,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:17:37,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:37" (1/1) ... [2021-10-24 10:17:37,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b276e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:37, skipping insertion in model container [2021-10-24 10:17:37,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:17:37" (1/1) ... [2021-10-24 10:17:37,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:17:37,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:17:38,069 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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-24 10:17:38,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:38,088 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:17:38,166 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_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-24 10:17:38,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:17:38,214 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:17:38,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38 WrapperNode [2021-10-24 10:17:38,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:17:38,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:38,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:17:38,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:17:38,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:17:38,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:17:38,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:17:38,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:17:38,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:17:38,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:17:38,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:17:38,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:17:38,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (1/1) ... [2021-10-24 10:17:38,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:17:38,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:17:38,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:17:38,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:17:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:17:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:17:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:17:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:17:38,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:17:38,955 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-24 10:17:38,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:38 BoogieIcfgContainer [2021-10-24 10:17:38,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:17:38,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:17:38,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:17:38,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:17:38,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:17:37" (1/3) ... [2021-10-24 10:17:38,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e526a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:38, skipping insertion in model container [2021-10-24 10:17:38,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:17:38" (2/3) ... [2021-10-24 10:17:38,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e526a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:17:38, skipping insertion in model container [2021-10-24 10:17:38,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:38" (3/3) ... [2021-10-24 10:17:38,968 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-24 10:17:38,980 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:17:38,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:17:39,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:17:39,070 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 [2021-10-24 10:17:39,070 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:17:39,096 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) [2021-10-24 10:17:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:17:39,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:39,113 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:17:39,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-10-24 10:17:39,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:39,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513508269] [2021-10-24 10:17:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:39,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:39,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:39,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:39,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:17:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:39,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:17:39,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:39,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:39,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:17:39,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513508269] [2021-10-24 10:17:39,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513508269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:39,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:39,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:17:39,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459064952] [2021-10-24 10:17:39,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:17:39,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:17:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:17:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:17:39,413 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) [2021-10-24 10:17:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:39,433 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-10-24 10:17:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:17:39,435 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 [2021-10-24 10:17:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:39,446 INFO L225 Difference]: With dead ends: 53 [2021-10-24 10:17:39,447 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 10:17:39,449 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 [2021-10-24 10:17:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 10:17:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-24 10:17:39,497 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) [2021-10-24 10:17:39,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-10-24 10:17:39,501 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-10-24 10:17:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:39,502 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-10-24 10:17:39,502 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) [2021-10-24 10:17:39,502 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-10-24 10:17:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:17:39,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:39,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:17:39,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:39,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:39,718 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-10-24 10:17:39,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:39,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333069483] [2021-10-24 10:17:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:39,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:39,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:39,725 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:39,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:17:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:39,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:39,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:39,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:39,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:17:39,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333069483] [2021-10-24 10:17:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333069483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:39,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:39,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:17:39,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726686770] [2021-10-24 10:17:39,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:39,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:17:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:39,860 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) [2021-10-24 10:17:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:39,877 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-10-24 10:17:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:39,879 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 [2021-10-24 10:17:39,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:39,881 INFO L225 Difference]: With dead ends: 50 [2021-10-24 10:17:39,881 INFO L226 Difference]: Without dead ends: 48 [2021-10-24 10:17:39,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-24 10:17:39,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-24 10:17:39,889 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) [2021-10-24 10:17:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-10-24 10:17:39,891 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-10-24 10:17:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:39,891 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-10-24 10:17:39,892 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) [2021-10-24 10:17:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-10-24 10:17:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:17:39,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:39,893 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] [2021-10-24 10:17:39,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:40,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:40,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-10-24 10:17:40,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:40,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111114716] [2021-10-24 10:17:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:40,110 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:40,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:40,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:40,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:17:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:40,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:40,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:40,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:40,472 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:17:40,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111114716] [2021-10-24 10:17:40,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111114716] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:40,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:40,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:17:40,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774325568] [2021-10-24 10:17:40,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:40,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:17:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:40,476 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) [2021-10-24 10:17:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:40,528 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-10-24 10:17:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:40,529 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 [2021-10-24 10:17:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:40,532 INFO L225 Difference]: With dead ends: 93 [2021-10-24 10:17:40,532 INFO L226 Difference]: Without dead ends: 93 [2021-10-24 10:17:40,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-24 10:17:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-24 10:17:40,545 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) [2021-10-24 10:17:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-10-24 10:17:40,548 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-10-24 10:17:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:40,548 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-10-24 10:17:40,549 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) [2021-10-24 10:17:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-10-24 10:17:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:17:40,550 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:40,555 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] [2021-10-24 10:17:40,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:40,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:40,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-10-24 10:17:40,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:40,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239676648] [2021-10-24 10:17:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:40,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:40,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:40,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:40,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:17:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:40,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:40,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:41,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:41,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:17:41,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239676648] [2021-10-24 10:17:41,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239676648] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:41,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:41,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:17:41,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023351818] [2021-10-24 10:17:41,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:41,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:17:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:41,145 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) [2021-10-24 10:17:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:41,183 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2021-10-24 10:17:41,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:41,184 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 [2021-10-24 10:17:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:41,190 INFO L225 Difference]: With dead ends: 94 [2021-10-24 10:17:41,194 INFO L226 Difference]: Without dead ends: 94 [2021-10-24 10:17:41,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:41,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-24 10:17:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-10-24 10:17:41,207 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) [2021-10-24 10:17:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-10-24 10:17:41,210 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-10-24 10:17:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:41,211 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-10-24 10:17:41,211 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) [2021-10-24 10:17:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-10-24 10:17:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:17:41,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:41,213 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] [2021-10-24 10:17:41,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-24 10:17:41,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:41,435 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-10-24 10:17:41,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:41,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189655371] [2021-10-24 10:17:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:41,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:41,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:41,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:41,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:17:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:41,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:41,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:41,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:41,769 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:17:41,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189655371] [2021-10-24 10:17:41,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189655371] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:41,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:41,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:17:41,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814410921] [2021-10-24 10:17:41,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:41,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:17:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:41,773 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) [2021-10-24 10:17:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:41,789 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-10-24 10:17:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:41,790 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 [2021-10-24 10:17:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:41,792 INFO L225 Difference]: With dead ends: 96 [2021-10-24 10:17:41,792 INFO L226 Difference]: Without dead ends: 96 [2021-10-24 10:17:41,792 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-24 10:17:41,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-10-24 10:17:41,802 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) [2021-10-24 10:17:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-10-24 10:17:41,805 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-10-24 10:17:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:41,805 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-10-24 10:17:41,806 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) [2021-10-24 10:17:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-10-24 10:17:41,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:17:41,807 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:41,807 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] [2021-10-24 10:17:41,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:42,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:42,022 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-10-24 10:17:42,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:42,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956837165] [2021-10-24 10:17:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:42,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:42,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:42,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:42,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:17:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:17:42,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:17:42,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:17:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:42,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:17:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:17:42,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:17:42,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956837165] [2021-10-24 10:17:42,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956837165] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:17:42,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:17:42,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:17:42,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322842705] [2021-10-24 10:17:42,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:17:42,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:17:42,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:17:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:42,360 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) [2021-10-24 10:17:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:17:42,381 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2021-10-24 10:17:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:17:42,381 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 [2021-10-24 10:17:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:17:42,386 INFO L225 Difference]: With dead ends: 127 [2021-10-24 10:17:42,387 INFO L226 Difference]: Without dead ends: 127 [2021-10-24 10:17:42,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:17:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-24 10:17:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-24 10:17:42,408 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) [2021-10-24 10:17:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-10-24 10:17:42,411 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-10-24 10:17:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:17:42,412 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-10-24 10:17:42,412 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) [2021-10-24 10:17:42,412 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-10-24 10:17:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:17:42,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:17:42,414 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] [2021-10-24 10:17:42,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:42,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:42,636 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:17:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:17:42,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-10-24 10:17:42,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:17:42,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233474059] [2021-10-24 10:17:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:17:42,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:17:42,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:17:42,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:17:42,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:17:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:42,769 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:17:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:17:42,862 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:17:42,863 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:17:42,864 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:17:42,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:17:42,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:17:43,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:17:43,095 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:17:43,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:17:43 BoogieIcfgContainer [2021-10-24 10:17:43,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:17:43,144 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:17:43,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:17:43,144 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:17:43,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:17:38" (3/4) ... [2021-10-24 10:17:43,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:17:43,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:17:43,152 INFO L168 Benchmark]: Toolchain (without parser) took 5346.04 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 29.2 MB in the beginning and 42.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:43,152 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:43,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.94 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.9 MB in the beginning and 51.4 MB in the end (delta: -22.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:43,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.30 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 49.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:43,155 INFO L168 Benchmark]: Boogie Preprocessor took 85.03 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 48.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:43,155 INFO L168 Benchmark]: RCFGBuilder took 566.44 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 49.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:43,156 INFO L168 Benchmark]: TraceAbstraction took 4183.24 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.5 MB in the beginning and 43.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:17:43,157 INFO L168 Benchmark]: Witness Printer took 5.53 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 42.6 MB in the end (delta: 522.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:17:43,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.94 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 28.9 MB in the beginning and 51.4 MB in the end (delta: -22.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.30 ms. Allocated memory is still 69.2 MB. Free memory was 51.3 MB in the beginning and 49.4 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.03 ms. Allocated memory is still 69.2 MB. Free memory was 49.4 MB in the beginning and 48.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 566.44 ms. Allocated memory is still 69.2 MB. Free memory was 47.8 MB in the beginning and 49.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4183.24 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.5 MB in the beginning and 43.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.53 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 42.6 MB in the end (delta: 522.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 4038.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 28.9ms, AutomataDifference: 238.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 624 SDtfs, 364 SDslu, 282 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms 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: 109.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 118.6ms SsaConstructionTime, 188.1ms SatisfiabilityAnalysisTime, 1067.4ms 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 [2021-10-24 10:17:43,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c9fe716-ea94-4ed1-b565-6d4a5007cd85/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...