./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur --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 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:42:41,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:42:41,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:42:41,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:42:41,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:42:41,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:42:41,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:42:41,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:42:41,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:42:41,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:42:41,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:42:41,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:42:41,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:42:41,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:42:41,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:42:41,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:42:41,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:42:41,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:42:41,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:42:41,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:42:41,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:42:41,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:42:41,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:42:41,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:42:41,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:42:41,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:42:41,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:42:41,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:42:41,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:42:41,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:42:41,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:42:41,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:42:41,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:42:41,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:42:41,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:42:41,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:42:41,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:42:41,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:42:41,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:42:41,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:42:41,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:42:41,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 23:42:41,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:42:41,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:42:41,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:42:41,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:42:41,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:42:41,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:42:41,603 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:42:41,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:42:41,603 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:42:41,603 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:42:41,604 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:42:41,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:42:41,605 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:42:41,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:42:41,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:42:41,605 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:42:41,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:42:41,606 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:42:41,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:42:41,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:42:41,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:42:41,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:42:41,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:42:41,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:42:41,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:42:41,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:42:41,609 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:42:41,609 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:42:41,609 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:42:41,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:42:41,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:42:41,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:42:41,610 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:42:41,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:42:41,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:42:41,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:41,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:42:41,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:42:41,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:42:41,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:42:41,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:42:41,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:42:41,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 [2022-11-25 23:42:41,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:42:41,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:42:41,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:42:41,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:42:41,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:42:41,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2022-11-25 23:42:45,033 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:42:45,275 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:42:45,276 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2022-11-25 23:42:45,289 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data/90ae90de1/bf9f05d851854c1baf0794259e60b3e5/FLAG523741391 [2022-11-25 23:42:45,313 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data/90ae90de1/bf9f05d851854c1baf0794259e60b3e5 [2022-11-25 23:42:45,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:42:45,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:42:45,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:45,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:42:45,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:42:45,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:45,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72916065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45, skipping insertion in model container [2022-11-25 23:42:45,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:45,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:42:45,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:42:45,652 WARN L237 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_8ed3bf6f-3123-492d-a6c3-edd30b83612b/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2022-11-25 23:42:45,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:45,871 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:42:45,888 WARN L237 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_8ed3bf6f-3123-492d-a6c3-edd30b83612b/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2022-11-25 23:42:45,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:45,980 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:42:45,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45 WrapperNode [2022-11-25 23:42:45,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:45,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:45,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:42:45,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:42:45,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,051 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-25 23:42:46,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:46,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:42:46,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:42:46,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:42:46,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:42:46,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:42:46,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:42:46,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:42:46,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (1/1) ... [2022-11-25 23:42:46,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:46,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:46,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:42:46,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:42:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:42:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 23:42:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:42:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:42:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 23:42:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 23:42:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:42:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:42:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:42:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:42:46,197 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:42:46,315 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:42:46,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:42:46,510 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:42:46,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:42:46,517 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:42:46,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:46 BoogieIcfgContainer [2022-11-25 23:42:46,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:42:46,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:42:46,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:42:46,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:42:46,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:42:45" (1/3) ... [2022-11-25 23:42:46,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdc7f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:46, skipping insertion in model container [2022-11-25 23:42:46,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:45" (2/3) ... [2022-11-25 23:42:46,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdc7f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:46, skipping insertion in model container [2022-11-25 23:42:46,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:46" (3/3) ... [2022-11-25 23:42:46,543 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2022-11-25 23:42:46,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:42:46,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 23:42:46,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:42:46,668 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:42:46,700 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:42:46,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 84 transitions, 173 flow [2022-11-25 23:42:46,729 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 84 transitions, 173 flow [2022-11-25 23:42:46,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 173 flow [2022-11-25 23:42:46,820 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-11-25 23:42:46,820 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 23:42:46,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-11-25 23:42:46,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 680 [2022-11-25 23:42:50,541 INFO L134 LiptonReduction]: Checked pairs total: 1605 [2022-11-25 23:42:50,542 INFO L136 LiptonReduction]: Total number of compositions: 78 [2022-11-25 23:42:50,550 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 21 transitions, 47 flow [2022-11-25 23:42:50,573 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 64 states, 60 states have (on average 1.9) internal successors, (114), 63 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:50,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:42:50,602 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@270f06ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:42:50,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 23:42:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 60 states have (on average 1.9) internal successors, (114), 63 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:42:50,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:50,611 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:42:50,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:42:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 296, now seen corresponding path program 1 times [2022-11-25 23:42:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:50,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821872840] [2022-11-25 23:42:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:50,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:50,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821872840] [2022-11-25 23:42:50,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821872840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:50,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:50,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 23:42:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433487641] [2022-11-25 23:42:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:42:50,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:42:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:42:50,803 INFO L87 Difference]: Start difference. First operand has 64 states, 60 states have (on average 1.9) internal successors, (114), 63 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:50,849 INFO L93 Difference]: Finished difference Result 62 states and 112 transitions. [2022-11-25 23:42:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:42:50,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-25 23:42:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:50,859 INFO L225 Difference]: With dead ends: 62 [2022-11-25 23:42:50,860 INFO L226 Difference]: Without dead ends: 62 [2022-11-25 23:42:50,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:42:50,866 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:50,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:42:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-25 23:42:50,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-25 23:42:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 61 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 112 transitions. [2022-11-25 23:42:50,914 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 112 transitions. Word has length 1 [2022-11-25 23:42:50,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:50,915 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 112 transitions. [2022-11-25 23:42:50,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 112 transitions. [2022-11-25 23:42:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:42:50,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:50,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:42:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:42:50,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:42:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 36763809, now seen corresponding path program 1 times [2022-11-25 23:42:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:50,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143433164] [2022-11-25 23:42:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:51,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:51,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143433164] [2022-11-25 23:42:51,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143433164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:51,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:51,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:42:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170101249] [2022-11-25 23:42:51,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:42:51,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:42:51,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:42:51,149 INFO L87 Difference]: Start difference. First operand 62 states and 112 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:51,228 INFO L93 Difference]: Finished difference Result 95 states and 164 transitions. [2022-11-25 23:42:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:42:51,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:42:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:51,231 INFO L225 Difference]: With dead ends: 95 [2022-11-25 23:42:51,232 INFO L226 Difference]: Without dead ends: 95 [2022-11-25 23:42:51,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:42:51,235 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:51,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:42:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-25 23:42:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2022-11-25 23:42:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.84) internal successors, (138), 76 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 138 transitions. [2022-11-25 23:42:51,257 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 138 transitions. Word has length 6 [2022-11-25 23:42:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:51,258 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 138 transitions. [2022-11-25 23:42:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 138 transitions. [2022-11-25 23:42:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:42:51,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:51,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:51,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:42:51,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:42:51,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1139679916, now seen corresponding path program 1 times [2022-11-25 23:42:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:51,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242640868] [2022-11-25 23:42:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:51,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:51,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242640868] [2022-11-25 23:42:51,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242640868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:51,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:51,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:42:51,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081621061] [2022-11-25 23:42:51,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:51,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:42:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:51,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:42:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:42:51,473 INFO L87 Difference]: Start difference. First operand 77 states and 138 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:51,505 INFO L93 Difference]: Finished difference Result 71 states and 127 transitions. [2022-11-25 23:42:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:42:51,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:42:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:51,507 INFO L225 Difference]: With dead ends: 71 [2022-11-25 23:42:51,507 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 23:42:51,507 INFO L412 NwaCegarLoop]: 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 [2022-11-25 23:42:51,508 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:51,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:42:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 23:42:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-25 23:42:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.653061224489796) internal successors, (81), 49 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 81 transitions. [2022-11-25 23:42:51,514 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 81 transitions. Word has length 7 [2022-11-25 23:42:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:51,514 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 81 transitions. [2022-11-25 23:42:51,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:42:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 81 transitions. [2022-11-25 23:42:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:42:51,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:51,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:51,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:42:51,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:42:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:51,517 INFO L85 PathProgramCache]: Analyzing trace with hash -6000649, now seen corresponding path program 1 times [2022-11-25 23:42:51,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:51,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456797130] [2022-11-25 23:42:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:42:51,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:42:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:42:51,564 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:42:51,565 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:42:51,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2022-11-25 23:42:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-25 23:42:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-11-25 23:42:51,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2022-11-25 23:42:51,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 23:42:51,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:42:51,571 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 23:42:51,576 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 23:42:51,576 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:42:51,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:42:51 BasicIcfg [2022-11-25 23:42:51,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:42:51,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:42:51,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:42:51,609 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:42:51,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:46" (3/4) ... [2022-11-25 23:42:51,613 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:42:51,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:42:51,619 INFO L158 Benchmark]: Toolchain (without parser) took 6296.52ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 121.4MB in the beginning and 149.1MB in the end (delta: -27.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-11-25 23:42:51,619 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:42:51,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 660.67ms. Allocated memory is still 161.5MB. Free memory was 121.4MB in the beginning and 116.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:42:51,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.39ms. Allocated memory is still 161.5MB. Free memory was 116.7MB in the beginning and 114.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:42:51,620 INFO L158 Benchmark]: Boogie Preprocessor took 53.16ms. Allocated memory is still 161.5MB. Free memory was 114.6MB in the beginning and 113.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:42:51,621 INFO L158 Benchmark]: RCFGBuilder took 412.36ms. Allocated memory is still 161.5MB. Free memory was 113.3MB in the beginning and 98.7MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:42:51,621 INFO L158 Benchmark]: TraceAbstraction took 5086.84ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 97.9MB in the beginning and 149.1MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:42:51,621 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 195.0MB. Free memory is still 149.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:42:51,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 660.67ms. Allocated memory is still 161.5MB. Free memory was 121.4MB in the beginning and 116.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.39ms. Allocated memory is still 161.5MB. Free memory was 116.7MB in the beginning and 114.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.16ms. Allocated memory is still 161.5MB. Free memory was 114.6MB in the beginning and 113.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 412.36ms. Allocated memory is still 161.5MB. Free memory was 113.3MB in the beginning and 98.7MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5086.84ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 97.9MB in the beginning and 149.1MB in the end (delta: -51.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 195.0MB. Free memory is still 149.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 86 PlacesBefore, 24 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 78 TotalNumberOfCompositions, 1605 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 839, independent: 697, independent conditional: 0, independent unconditional: 697, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 473, independent: 427, independent conditional: 0, independent unconditional: 427, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 473, independent: 403, independent conditional: 0, independent unconditional: 403, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 288, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 207, dependent conditional: 0, dependent unconditional: 207, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 839, independent: 270, independent conditional: 0, independent unconditional: 270, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 473, unknown conditional: 0, unknown unconditional: 473] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, B={4:0}, g=42, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, r=1] [L700] COND TRUE 0 \read(r) [L701] 0 g = 17 VAL [A={3:0}, arg={0:0}, B={4:0}, g=17, id={5:0}, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [\old(cond)=0, A={3:0}, arg={0:0}, B={4:0}, cond=0, g=17] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 12 mSDtfsCounter, 70 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 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 [2022-11-25 23:42:51,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur --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 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:42:54,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:42:54,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:42:54,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:42:54,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:42:54,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:42:54,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:42:54,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:42:54,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:42:54,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:42:54,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:42:54,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:42:54,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:42:54,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:42:54,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:42:54,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:42:54,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:42:54,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:42:54,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:42:54,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:42:54,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:42:54,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:42:54,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:42:54,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:42:54,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:42:54,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:42:54,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:42:54,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:42:54,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:42:54,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:42:54,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:42:54,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:42:54,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:42:54,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:42:54,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:42:54,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:42:54,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:42:54,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:42:54,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:42:54,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:42:54,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:42:54,235 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-25 23:42:54,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:42:54,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:42:54,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:42:54,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:42:54,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:42:54,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:42:54,262 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:42:54,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:42:54,263 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:42:54,263 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:42:54,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:42:54,264 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:42:54,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 23:42:54,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 23:42:54,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:42:54,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:42:54,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:42:54,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:42:54,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:42:54,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:42:54,267 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 23:42:54,267 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 23:42:54,268 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 23:42:54,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:42:54,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:42:54,269 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:42:54,269 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:42:54,269 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:42:54,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:42:54,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:42:54,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:42:54,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:42:54,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:54,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:42:54,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:42:54,272 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:42:54,272 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:42:54,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:42:54,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:42:54,273 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_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 [2022-11-25 23:42:54,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:42:54,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:42:54,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:42:54,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:42:54,713 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:42:54,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2022-11-25 23:42:57,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:42:58,046 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:42:58,048 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2022-11-25 23:42:58,060 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data/4e00e8529/8bf35d7617cb44f88e384edc76cdc62a/FLAGfb3d5a62c [2022-11-25 23:42:58,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/data/4e00e8529/8bf35d7617cb44f88e384edc76cdc62a [2022-11-25 23:42:58,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:42:58,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:42:58,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:58,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:42:58,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:42:58,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5faba1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58, skipping insertion in model container [2022-11-25 23:42:58,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:42:58,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:42:58,392 WARN L237 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_8ed3bf6f-3123-492d-a6c3-edd30b83612b/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2022-11-25 23:42:58,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:58,635 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:42:58,655 WARN L237 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_8ed3bf6f-3123-492d-a6c3-edd30b83612b/sv-benchmarks/c/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2022-11-25 23:42:58,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:58,767 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:42:58,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58 WrapperNode [2022-11-25 23:42:58,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:58,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:58,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:42:58,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:42:58,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,861 INFO L138 Inliner]: procedures = 167, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-25 23:42:58,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:58,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:42:58,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:42:58,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:42:58,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:42:58,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:42:58,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:42:58,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:42:58,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (1/1) ... [2022-11-25 23:42:58,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:58,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:58,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:42:58,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:42:59,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 23:42:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:42:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:42:59,009 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 23:42:59,010 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 23:42:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:42:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 23:42:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:42:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-25 23:42:59,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:42:59,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:42:59,012 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 23:42:59,223 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:42:59,225 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:42:59,496 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:42:59,503 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:42:59,503 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:42:59,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:59 BoogieIcfgContainer [2022-11-25 23:42:59,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:42:59,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:42:59,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:42:59,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:42:59,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:42:58" (1/3) ... [2022-11-25 23:42:59,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d564dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:59, skipping insertion in model container [2022-11-25 23:42:59,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:58" (2/3) ... [2022-11-25 23:42:59,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d564dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:59, skipping insertion in model container [2022-11-25 23:42:59,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:59" (3/3) ... [2022-11-25 23:42:59,514 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2022-11-25 23:42:59,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:42:59,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 23:42:59,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 23:42:59,604 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 23:42:59,658 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 23:42:59,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 84 transitions, 173 flow [2022-11-25 23:42:59,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 84 transitions, 173 flow [2022-11-25 23:42:59,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 173 flow [2022-11-25 23:42:59,735 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-11-25 23:42:59,738 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 23:42:59,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-11-25 23:42:59,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 680 [2022-11-25 23:43:06,316 INFO L134 LiptonReduction]: Checked pairs total: 1915 [2022-11-25 23:43:06,316 INFO L136 LiptonReduction]: Total number of compositions: 79 [2022-11-25 23:43:06,324 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 22 transitions, 49 flow [2022-11-25 23:43:06,347 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 70 states, 66 states have (on average 1.893939393939394) internal successors, (125), 69 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:06,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:43:06,370 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5956e6b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:43:06,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 23:43:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 66 states have (on average 1.893939393939394) internal successors, (125), 69 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-25 23:43:06,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:06,378 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-25 23:43:06,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:43:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash 296, now seen corresponding path program 1 times [2022-11-25 23:43:06,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:43:06,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971535054] [2022-11-25 23:43:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:06,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:06,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:43:06,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:43:06,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:43:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:43:06,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 23:43:06,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:43:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:43:06,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:43:06,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:43:06,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971535054] [2022-11-25 23:43:06,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971535054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:43:06,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:43:06,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 23:43:06,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694428427] [2022-11-25 23:43:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:43:06,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:43:06,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:43:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:43:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:43:06,524 INFO L87 Difference]: Start difference. First operand has 70 states, 66 states have (on average 1.893939393939394) internal successors, (125), 69 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:06,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:43:06,565 INFO L93 Difference]: Finished difference Result 68 states and 123 transitions. [2022-11-25 23:43:06,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:43:06,568 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-25 23:43:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:43:06,575 INFO L225 Difference]: With dead ends: 68 [2022-11-25 23:43:06,576 INFO L226 Difference]: Without dead ends: 68 [2022-11-25 23:43:06,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:43:06,579 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:43:06,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:43:06,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-25 23:43:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-25 23:43:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.8636363636363635) internal successors, (123), 67 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 123 transitions. [2022-11-25 23:43:06,643 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 123 transitions. Word has length 1 [2022-11-25 23:43:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:43:06,643 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 123 transitions. [2022-11-25 23:43:06,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 123 transitions. [2022-11-25 23:43:06,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:43:06,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:06,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:43:06,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:43:06,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:06,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:43:06,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:06,846 INFO L85 PathProgramCache]: Analyzing trace with hash 122383112, now seen corresponding path program 1 times [2022-11-25 23:43:06,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:43:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864825468] [2022-11-25 23:43:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:06,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:43:06,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:43:06,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 23:43:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:43:06,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:43:06,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:43:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:43:07,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:43:07,007 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:43:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864825468] [2022-11-25 23:43:07,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864825468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:43:07,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:43:07,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:43:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582496722] [2022-11-25 23:43:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:43:07,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:43:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:43:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:43:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:43:07,011 INFO L87 Difference]: Start difference. First operand 68 states and 123 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:43:07,108 INFO L93 Difference]: Finished difference Result 107 states and 182 transitions. [2022-11-25 23:43:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:43:07,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:43:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:43:07,110 INFO L225 Difference]: With dead ends: 107 [2022-11-25 23:43:07,110 INFO L226 Difference]: Without dead ends: 107 [2022-11-25 23:43:07,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:43:07,111 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:43:07,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 15 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:43:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-25 23:43:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2022-11-25 23:43:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.8395061728395061) internal successors, (149), 82 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 149 transitions. [2022-11-25 23:43:07,123 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 149 transitions. Word has length 6 [2022-11-25 23:43:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:43:07,124 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 149 transitions. [2022-11-25 23:43:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 149 transitions. [2022-11-25 23:43:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:43:07,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:07,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:43:07,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:43:07,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:07,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:43:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash -501088922, now seen corresponding path program 1 times [2022-11-25 23:43:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:43:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936258998] [2022-11-25 23:43:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:43:07,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:43:07,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 23:43:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:43:07,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 23:43:07,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:43:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:43:07,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:43:07,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:43:07,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936258998] [2022-11-25 23:43:07,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936258998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:43:07,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:43:07,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 23:43:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429772328] [2022-11-25 23:43:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:43:07,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:43:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:43:07,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:43:07,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:43:07,540 INFO L87 Difference]: Start difference. First operand 83 states and 149 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:07,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:43:07,581 INFO L93 Difference]: Finished difference Result 77 states and 138 transitions. [2022-11-25 23:43:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:43:07,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 23:43:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:43:07,585 INFO L225 Difference]: With dead ends: 77 [2022-11-25 23:43:07,585 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 23:43:07,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:43:07,589 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:43:07,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:43:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 23:43:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-25 23:43:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.653061224489796) internal successors, (81), 49 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:07,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 81 transitions. [2022-11-25 23:43:07,598 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 81 transitions. Word has length 7 [2022-11-25 23:43:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:43:07,601 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 81 transitions. [2022-11-25 23:43:07,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:43:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 81 transitions. [2022-11-25 23:43:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 23:43:07,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:43:07,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:43:07,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:43:07,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:07,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2022-11-25 23:43:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:43:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 373162501, now seen corresponding path program 1 times [2022-11-25 23:43:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:43:07,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276836533] [2022-11-25 23:43:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:43:07,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:43:07,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:43:07,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 23:43:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:07,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:43:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:43:07,965 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:43:07,965 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:43:07,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2022-11-25 23:43:07,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-25 23:43:07,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-11-25 23:43:07,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2022-11-25 23:43:07,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-25 23:43:07,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:43:08,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:43:08,180 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 23:43:08,183 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 23:43:08,183 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:43:08,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:43:08 BasicIcfg [2022-11-25 23:43:08,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:43:08,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:43:08,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:43:08,202 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:43:08,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:59" (3/4) ... [2022-11-25 23:43:08,206 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:43:08,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:43:08,207 INFO L158 Benchmark]: Toolchain (without parser) took 10119.52ms. Allocated memory is still 86.0MB. Free memory was 63.5MB in the beginning and 54.4MB in the end (delta: 9.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-25 23:43:08,207 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 60.8MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:08,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 680.06ms. Allocated memory is still 86.0MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 122.3kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2022-11-25 23:43:08,208 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.50ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 61.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:43:08,208 INFO L158 Benchmark]: Boogie Preprocessor took 43.31ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 59.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:08,209 INFO L158 Benchmark]: RCFGBuilder took 598.60ms. Allocated memory is still 86.0MB. Free memory was 59.5MB in the beginning and 44.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:43:08,209 INFO L158 Benchmark]: TraceAbstraction took 8694.18ms. Allocated memory is still 86.0MB. Free memory was 43.9MB in the beginning and 54.4MB in the end (delta: -10.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:08,209 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 86.0MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:43:08,211 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 60.8MB. Free memory is still 39.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 680.06ms. Allocated memory is still 86.0MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 122.3kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.50ms. Allocated memory is still 86.0MB. Free memory was 63.2MB in the beginning and 61.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.31ms. Allocated memory is still 86.0MB. Free memory was 61.1MB in the beginning and 59.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 598.60ms. Allocated memory is still 86.0MB. Free memory was 59.5MB in the beginning and 44.9MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8694.18ms. Allocated memory is still 86.0MB. Free memory was 43.9MB in the beginning and 54.4MB in the end (delta: -10.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 86.0MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.6s, 86 PlacesBefore, 25 PlacesAfterwards, 84 TransitionsBefore, 22 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 79 TotalNumberOfCompositions, 1915 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 866, independent: 687, independent conditional: 0, independent unconditional: 687, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 463, independent: 417, independent conditional: 0, independent unconditional: 417, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 463, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 71, independent: 25, independent conditional: 0, independent unconditional: 25, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 395, independent: 129, independent conditional: 0, independent unconditional: 129, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 866, independent: 270, independent conditional: 0, independent unconditional: 270, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 463, unknown conditional: 0, unknown unconditional: 463] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, B={4:0}, g=42, id={7:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0] [L700] COND TRUE 0 \read(r) VAL [A={3:0}, arg={0:0}, B={4:0}, g=42, id={7:0}, r=2] [L701] 0 g = 17 VAL [A={3:0}, arg={0:0}, B={4:0}, g=17, id={7:0}, r=2] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [\old(cond)=0, A={3:0}, arg={0:0}, B={4:0}, cond=0, g=17] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 15 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 6 QuantifiedInterpolants, 93 SizeOfPredicates, 3 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 12 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 [2022-11-25 23:43:08,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ed3bf6f-3123-492d-a6c3-edd30b83612b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample