./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI --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 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI --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 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:18,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:18,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:18,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:18,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:18,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:18,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:18,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:18,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:18,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:18,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:18,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:18,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:18,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:18,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:18,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:18,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:18,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:18,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:18,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:18,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:18,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:18,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:18,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:18,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:18,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:18,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:18,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:18,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:18,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:18,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:18,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:18,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:18,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:18,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:18,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:18,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:18,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:18,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:18,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:18,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:18,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:21:18,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:18,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:18,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:18,623 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:18,623 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:18,623 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:18,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:18,624 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:18,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:18,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:18,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:18,624 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:18,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:18,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:18,625 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:18,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:21:18,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:21:18,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:18,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:21:18,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:18,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:18,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:18,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:18,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:18,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:18,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:18,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:18,630 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_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2021-10-11 02:21:18,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:18,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:18,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:18,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:18,979 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:18,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 02:21:19,054 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/05b3d6af5/6a208235e3ea4601a578dbf5940e97d5/FLAGe12912f9d [2021-10-11 02:21:19,585 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:19,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 02:21:19,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/05b3d6af5/6a208235e3ea4601a578dbf5940e97d5/FLAGe12912f9d [2021-10-11 02:21:19,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/05b3d6af5/6a208235e3ea4601a578dbf5940e97d5 [2021-10-11 02:21:19,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:19,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:19,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:19,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:19,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:19,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:19" (1/1) ... [2021-10-11 02:21:19,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7827e4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:19, skipping insertion in model container [2021-10-11 02:21:19,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:19" (1/1) ... [2021-10-11 02:21:19,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:19,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:20,222 WARN L226 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_10703961-5f7e-4d4c-ad56-eb097393554d/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 02:21:20,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:20,249 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:20,308 WARN L226 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_10703961-5f7e-4d4c-ad56-eb097393554d/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 02:21:20,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:20,325 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:20,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20 WrapperNode [2021-10-11 02:21:20,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:20,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:20,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:20,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:20,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:20,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:20,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:20,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:20,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... [2021-10-11 02:21:20,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:20,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:20,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:20,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:20,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:20,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:21,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:21,329 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:21:21,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:21 BoogieIcfgContainer [2021-10-11 02:21:21,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:21,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:21,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:21,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:19" (1/3) ... [2021-10-11 02:21:21,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f305fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:21, skipping insertion in model container [2021-10-11 02:21:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:20" (2/3) ... [2021-10-11 02:21:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f305fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:21, skipping insertion in model container [2021-10-11 02:21:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:21" (3/3) ... [2021-10-11 02:21:21,347 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-11 02:21:21,361 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:21,364 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:21:21,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:21:21,391 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:21,391 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:21:21,391 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:21,391 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:21,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:21,392 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:21,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:21,392 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:21,405 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-10-11 02:21:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:21:21,410 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:21,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:21:21,411 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:21,417 INFO L82 PathProgramCache]: Analyzing trace with hash 9118541, now seen corresponding path program 1 times [2021-10-11 02:21:21,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:21,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342643158] [2021-10-11 02:21:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:21,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342643158] [2021-10-11 02:21:21,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:21,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:21,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967946397] [2021-10-11 02:21:21,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:21,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:21,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:21,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:21,692 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2021-10-11 02:21:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:21,708 INFO L93 Difference]: Finished difference Result 37 states and 64 transitions. [2021-10-11 02:21:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:21,709 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:21:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:21,722 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:21:21,723 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:21:21,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:21:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-11 02:21:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:21:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-10-11 02:21:21,772 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 4 [2021-10-11 02:21:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:21,772 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-10-11 02:21:21,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-10-11 02:21:21,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:21,773 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:21,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:21,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:21,773 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:21,776 INFO L82 PathProgramCache]: Analyzing trace with hash 274635153, now seen corresponding path program 1 times [2021-10-11 02:21:21,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:21,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674538227] [2021-10-11 02:21:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:21,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674538227] [2021-10-11 02:21:21,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:21,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:21:21,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817042880] [2021-10-11 02:21:21,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:21,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:21,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:21,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:21,883 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 3 states. [2021-10-11 02:21:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:21,889 INFO L93 Difference]: Finished difference Result 35 states and 62 transitions. [2021-10-11 02:21:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:21,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:21:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:21,896 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:21:21,896 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:21:21,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:21:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-11 02:21:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:21:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 60 transitions. [2021-10-11 02:21:21,907 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 60 transitions. Word has length 5 [2021-10-11 02:21:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:21,908 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 60 transitions. [2021-10-11 02:21:21,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2021-10-11 02:21:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:21,909 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:21,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:21,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:21,910 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:21,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:21,911 INFO L82 PathProgramCache]: Analyzing trace with hash -67997349, now seen corresponding path program 1 times [2021-10-11 02:21:21,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:21,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91907389] [2021-10-11 02:21:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:22,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91907389] [2021-10-11 02:21:22,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:22,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:22,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457350766] [2021-10-11 02:21:22,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:22,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:22,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:22,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:22,029 INFO L87 Difference]: Start difference. First operand 33 states and 60 transitions. Second operand 4 states. [2021-10-11 02:21:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:22,070 INFO L93 Difference]: Finished difference Result 63 states and 114 transitions. [2021-10-11 02:21:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:22,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:21:22,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:22,077 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:21:22,079 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:21:22,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:21:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2021-10-11 02:21:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:21:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-10-11 02:21:22,089 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-10-11 02:21:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:22,089 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-10-11 02:21:22,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-10-11 02:21:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:22,090 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:22,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:22,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:22,091 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash -67990157, now seen corresponding path program 1 times [2021-10-11 02:21:22,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:22,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532095419] [2021-10-11 02:21:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:22,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:22,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:22,212 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:22,212 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:22,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:21:22,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:22 BoogieIcfgContainer [2021-10-11 02:21:22,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:22,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:22,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:22,246 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:22,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:21" (3/4) ... [2021-10-11 02:21:22,250 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:21:22,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:22,252 INFO L168 Benchmark]: Toolchain (without parser) took 2324.74 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 60.4 MB in the beginning and 56.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:22,253 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 88.1 MB. Free memory was 57.2 MB in the beginning and 57.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:22,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.40 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 49.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:22,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.99 ms. Allocated memory is still 88.1 MB. Free memory was 49.1 MB in the beginning and 47.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:22,255 INFO L168 Benchmark]: Boogie Preprocessor took 45.25 ms. Allocated memory is still 88.1 MB. Free memory was 47.3 MB in the beginning and 45.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:22,256 INFO L168 Benchmark]: RCFGBuilder took 909.15 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 45.9 MB in the beginning and 47.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:22,256 INFO L168 Benchmark]: TraceAbstraction took 906.52 ms. Allocated memory is still 107.0 MB. Free memory was 46.5 MB in the beginning and 56.1 MB in the end (delta: -9.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:22,257 INFO L168 Benchmark]: Witness Printer took 4.08 ms. Allocated memory is still 107.0 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:22,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 88.1 MB. Free memory was 57.2 MB in the beginning and 57.2 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.40 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 49.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.99 ms. Allocated memory is still 88.1 MB. Free memory was 49.1 MB in the beginning and 47.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.25 ms. Allocated memory is still 88.1 MB. Free memory was 47.3 MB in the beginning and 45.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 909.15 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 45.9 MB in the beginning and 47.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 906.52 ms. Allocated memory is still 107.0 MB. Free memory was 46.5 MB in the beginning and 56.1 MB in the end (delta: -9.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.08 ms. Allocated memory is still 107.0 MB. Free memory is still 56.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 FALSE !(p4 != 0) [L104] COND TRUE p5 != 0 [L105] lk5 = 1 [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND FALSE !(p14 != 0) [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L219] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 183 SDtfs, 114 SDslu, 108 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:24,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:24,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:24,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:24,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:24,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:24,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:24,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:24,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:24,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:24,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:24,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:24,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:24,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:24,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:24,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:24,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:24,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:24,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:24,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:24,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:24,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:24,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:24,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:24,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:24,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:24,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:24,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:24,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:24,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:24,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:24,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:24,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:24,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:24,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:24,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:24,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:24,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:24,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:24,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:24,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:24,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:21:24,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:24,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:24,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:24,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:24,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:24,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:24,937 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:24,937 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:24,937 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:24,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:21:24,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:21:24,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:24,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:24,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:24,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:24,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:24,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:24,941 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:21:24,941 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:21:24,942 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:21:24,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:24,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:24,942 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:21:24,942 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:21:24,942 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:24,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:24,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:24,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:21:24,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:24,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:24,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:24,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:24,944 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:21:24,944 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:24,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:24,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:24,945 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_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2021-10-11 02:21:25,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:25,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:25,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:25,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:25,389 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:25,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 02:21:25,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/efa4d974d/c65a26afc7444ed3ad52ace603f34e06/FLAG0b544f8d1 [2021-10-11 02:21:25,999 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:26,000 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 02:21:26,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/efa4d974d/c65a26afc7444ed3ad52ace603f34e06/FLAG0b544f8d1 [2021-10-11 02:21:26,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/data/efa4d974d/c65a26afc7444ed3ad52ace603f34e06 [2021-10-11 02:21:26,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:26,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:26,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:26,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:26,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:26,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ced3efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26, skipping insertion in model container [2021-10-11 02:21:26,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:26,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:26,651 WARN L226 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_10703961-5f7e-4d4c-ad56-eb097393554d/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 02:21:26,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:26,680 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:26,709 WARN L226 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_10703961-5f7e-4d4c-ad56-eb097393554d/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 02:21:26,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:26,741 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:26,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26 WrapperNode [2021-10-11 02:21:26,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:26,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:26,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:26,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:26,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:26,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:26,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:26,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:26,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... [2021-10-11 02:21:26,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:26,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:26,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:26,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:26,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:26,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:26,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:21:26,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:27,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:27,621 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:21:27,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:27 BoogieIcfgContainer [2021-10-11 02:21:27,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:27,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:27,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:27,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:27,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:26" (1/3) ... [2021-10-11 02:21:27,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d6ab95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:27, skipping insertion in model container [2021-10-11 02:21:27,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:26" (2/3) ... [2021-10-11 02:21:27,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d6ab95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:27, skipping insertion in model container [2021-10-11 02:21:27,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:27" (3/3) ... [2021-10-11 02:21:27,634 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-11 02:21:27,651 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:27,654 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:21:27,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:21:27,695 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:27,695 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:21:27,695 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:27,695 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:27,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:27,696 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:27,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:27,696 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-10-11 02:21:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:27,717 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:27,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:27,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash 28943010, now seen corresponding path program 1 times [2021-10-11 02:21:27,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:27,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146518430] [2021-10-11 02:21:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:27,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:21:27,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:27,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:27,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146518430] [2021-10-11 02:21:27,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:27,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:27,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230562722] [2021-10-11 02:21:27,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:27,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:27,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:27,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:27,917 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2021-10-11 02:21:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:27,933 INFO L93 Difference]: Finished difference Result 53 states and 94 transitions. [2021-10-11 02:21:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:27,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:21:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:27,944 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:21:27,944 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:21:27,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:21:27,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:21:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:21:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 92 transitions. [2021-10-11 02:21:27,980 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 92 transitions. Word has length 5 [2021-10-11 02:21:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:27,981 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 92 transitions. [2021-10-11 02:21:27,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 92 transitions. [2021-10-11 02:21:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:27,982 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:27,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:28,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:28,201 INFO L82 PathProgramCache]: Analyzing trace with hash 889700139, now seen corresponding path program 1 times [2021-10-11 02:21:28,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:28,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751944004] [2021-10-11 02:21:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:28,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:28,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:28,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:28,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751944004] [2021-10-11 02:21:28,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:28,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:28,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882757994] [2021-10-11 02:21:28,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:28,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:28,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:28,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:28,361 INFO L87 Difference]: Start difference. First operand 51 states and 92 transitions. Second operand 3 states. [2021-10-11 02:21:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:28,386 INFO L93 Difference]: Finished difference Result 50 states and 91 transitions. [2021-10-11 02:21:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:28,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:21:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:28,388 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:21:28,389 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 02:21:28,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 02:21:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-11 02:21:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 02:21:28,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-10-11 02:21:28,397 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 6 [2021-10-11 02:21:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:28,397 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-10-11 02:21:28,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-10-11 02:21:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:28,398 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:28,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:28,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:28,614 INFO L82 PathProgramCache]: Analyzing trace with hash 792943379, now seen corresponding path program 1 times [2021-10-11 02:21:28,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:28,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587576986] [2021-10-11 02:21:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:28,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:28,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:28,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:28,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587576986] [2021-10-11 02:21:28,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:28,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:28,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286564567] [2021-10-11 02:21:28,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:28,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:28,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:28,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:28,798 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand 3 states. [2021-10-11 02:21:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:28,834 INFO L93 Difference]: Finished difference Result 93 states and 173 transitions. [2021-10-11 02:21:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:28,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:28,837 INFO L225 Difference]: With dead ends: 93 [2021-10-11 02:21:28,848 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 02:21:28,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 02:21:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-11 02:21:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-10-11 02:21:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 118 transitions. [2021-10-11 02:21:28,860 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 118 transitions. Word has length 21 [2021-10-11 02:21:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:28,861 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 118 transitions. [2021-10-11 02:21:28,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 118 transitions. [2021-10-11 02:21:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:28,862 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:28,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:29,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:21:29,063 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:29,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:29,064 INFO L82 PathProgramCache]: Analyzing trace with hash 792950571, now seen corresponding path program 1 times [2021-10-11 02:21:29,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:29,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854652897] [2021-10-11 02:21:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:29,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:29,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:29,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:29,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854652897] [2021-10-11 02:21:29,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:29,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:29,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189383611] [2021-10-11 02:21:29,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:29,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:29,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:29,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:29,227 INFO L87 Difference]: Start difference. First operand 63 states and 118 transitions. Second operand 3 states. [2021-10-11 02:21:29,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:29,277 INFO L93 Difference]: Finished difference Result 94 states and 173 transitions. [2021-10-11 02:21:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:29,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:29,283 INFO L225 Difference]: With dead ends: 94 [2021-10-11 02:21:29,283 INFO L226 Difference]: Without dead ends: 94 [2021-10-11 02:21:29,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-11 02:21:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2021-10-11 02:21:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-10-11 02:21:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 172 transitions. [2021-10-11 02:21:29,298 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 172 transitions. Word has length 21 [2021-10-11 02:21:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:29,299 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 172 transitions. [2021-10-11 02:21:29,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 172 transitions. [2021-10-11 02:21:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:29,300 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:29,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:29,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:21:29,509 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:29,509 INFO L82 PathProgramCache]: Analyzing trace with hash -795404523, now seen corresponding path program 1 times [2021-10-11 02:21:29,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:29,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208613279] [2021-10-11 02:21:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:29,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:29,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:29,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:29,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208613279] [2021-10-11 02:21:29,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:29,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:29,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039021961] [2021-10-11 02:21:29,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:29,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:29,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:29,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:29,669 INFO L87 Difference]: Start difference. First operand 92 states and 172 transitions. Second operand 3 states. [2021-10-11 02:21:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:29,688 INFO L93 Difference]: Finished difference Result 96 states and 173 transitions. [2021-10-11 02:21:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:29,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:29,691 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:21:29,691 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 02:21:29,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 02:21:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-10-11 02:21:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-10-11 02:21:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 172 transitions. [2021-10-11 02:21:29,701 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 172 transitions. Word has length 21 [2021-10-11 02:21:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:29,702 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 172 transitions. [2021-10-11 02:21:29,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 172 transitions. [2021-10-11 02:21:29,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:29,703 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:29,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:29,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:21:29,925 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:29,926 INFO L82 PathProgramCache]: Analyzing trace with hash -795397331, now seen corresponding path program 1 times [2021-10-11 02:21:29,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:29,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001628608] [2021-10-11 02:21:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:30,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:30,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:30,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:30,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001628608] [2021-10-11 02:21:30,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:30,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:30,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758017687] [2021-10-11 02:21:30,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:30,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:30,065 INFO L87 Difference]: Start difference. First operand 94 states and 172 transitions. Second operand 3 states. [2021-10-11 02:21:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:30,108 INFO L93 Difference]: Finished difference Result 127 states and 228 transitions. [2021-10-11 02:21:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:30,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-10-11 02:21:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:30,112 INFO L225 Difference]: With dead ends: 127 [2021-10-11 02:21:30,112 INFO L226 Difference]: Without dead ends: 127 [2021-10-11 02:21:30,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-11 02:21:30,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-10-11 02:21:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-10-11 02:21:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 227 transitions. [2021-10-11 02:21:30,123 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 227 transitions. Word has length 21 [2021-10-11 02:21:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:30,123 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 227 transitions. [2021-10-11 02:21:30,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 227 transitions. [2021-10-11 02:21:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:21:30,125 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:30,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:30,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:21:30,340 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2021-10-11 02:21:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1816465685, now seen corresponding path program 1 times [2021-10-11 02:21:30,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:30,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63720150] [2021-10-11 02:21:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10703961-5f7e-4d4c-ad56-eb097393554d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:30,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:30,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:30,570 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:21:30,570 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:30,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:21:30,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:30 BoogieIcfgContainer [2021-10-11 02:21:30,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:30,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:30,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:30,842 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:30,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:27" (3/4) ... [2021-10-11 02:21:30,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:21:30,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:30,854 INFO L168 Benchmark]: Toolchain (without parser) took 4476.65 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 55.6 MB in the beginning and 84.1 MB in the end (delta: -28.5 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:30,854 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 72.4 MB in the beginning and 72.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:30,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.09 ms. Allocated memory is still 90.2 MB. Free memory was 55.4 MB in the beginning and 74.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:30,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.92 ms. Allocated memory is still 90.2 MB. Free memory was 74.8 MB in the beginning and 73.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:30,857 INFO L168 Benchmark]: Boogie Preprocessor took 64.93 ms. Allocated memory is still 90.2 MB. Free memory was 73.0 MB in the beginning and 71.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:30,857 INFO L168 Benchmark]: RCFGBuilder took 735.93 ms. Allocated memory is still 90.2 MB. Free memory was 71.4 MB in the beginning and 47.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:30,860 INFO L168 Benchmark]: TraceAbstraction took 3215.92 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 47.6 MB in the beginning and 85.3 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:30,861 INFO L168 Benchmark]: Witness Printer took 6.09 ms. Allocated memory is still 121.6 MB. Free memory was 85.1 MB in the beginning and 84.1 MB in the end (delta: 920.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:30,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 72.4 MB in the beginning and 72.3 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.09 ms. Allocated memory is still 90.2 MB. Free memory was 55.4 MB in the beginning and 74.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.92 ms. Allocated memory is still 90.2 MB. Free memory was 74.8 MB in the beginning and 73.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.93 ms. Allocated memory is still 90.2 MB. Free memory was 73.0 MB in the beginning and 71.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 735.93 ms. Allocated memory is still 90.2 MB. Free memory was 71.4 MB in the beginning and 47.9 MB in the end (delta: 23.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3215.92 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 47.6 MB in the beginning and 85.3 MB in the end (delta: -37.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.09 ms. Allocated memory is still 121.6 MB. Free memory was 85.1 MB in the beginning and 84.1 MB in the end (delta: 920.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 624 SDtfs, 364 SDslu, 282 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 5121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 317 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 Received shutdown request...