./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh --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 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 --- 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-2329fc7 [2022-12-14 06:32:56,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:32:56,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:32:56,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:32:56,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:32:56,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:32:56,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:32:56,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:32:56,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:32:56,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:32:56,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:32:56,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:32:56,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:32:56,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:32:56,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:32:56,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:32:56,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:32:56,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:32:56,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:32:56,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:32:56,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:32:56,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:32:56,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:32:56,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:32:56,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:32:56,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:32:56,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:32:56,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:32:56,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:32:56,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:32:56,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:32:56,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:32:56,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:32:56,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:32:56,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:32:56,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:32:56,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:32:56,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:32:56,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:32:56,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:32:56,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:32:56,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 06:32:56,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:32:56,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:32:56,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:32:56,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:32:56,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:32:56,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:32:56,506 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:32:56,506 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:32:56,506 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:32:56,506 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:32:56,507 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:32:56,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:32:56,507 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:32:56,507 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:32:56,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:32:56,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:32:56,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:32:56,508 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:32:56,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 06:32:56,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 06:32:56,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:32:56,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:32:56,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:32:56,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:32:56,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:32:56,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:32:56,509 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:32:56,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:32:56,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:32:56,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:32:56,511 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:32:56,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:32:56,511 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:32:56,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:32:56,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:32:56,511 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_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 [2022-12-14 06:32:56,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:32:56,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:32:56,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:32:56,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:32:56,710 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:32:56,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i [2022-12-14 06:32:59,351 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:32:59,546 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:32:59,546 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i [2022-12-14 06:32:59,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/data/05894e542/dae00c6dfdcc4c0692f0c1ea2ce0e038/FLAGce7cca650 [2022-12-14 06:32:59,566 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/data/05894e542/dae00c6dfdcc4c0692f0c1ea2ce0e038 [2022-12-14 06:32:59,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:32:59,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:32:59,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:32:59,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:32:59,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:32:59,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c00e449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59, skipping insertion in model container [2022-12-14 06:32:59,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:32:59,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:32:59,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:32:59,874 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:32:59,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:32:59,933 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:32:59,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59 WrapperNode [2022-12-14 06:32:59,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:32:59,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:32:59,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:32:59,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:32:59,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,965 INFO L138 Inliner]: procedures = 263, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2022-12-14 06:32:59,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:32:59,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:32:59,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:32:59,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:32:59,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:32:59,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:32:59,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:32:59,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:32:59,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (1/1) ... [2022-12-14 06:32:59,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:32:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:33:00,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:33:00,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:33:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:33:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:33:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:33:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:33:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 06:33:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:33:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-14 06:33:00,045 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-14 06:33:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:33:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:33:00,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:33:00,047 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 06:33:00,143 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:33:00,144 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:33:00,261 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:33:00,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:33:00,266 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:33:00,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:33:00 BoogieIcfgContainer [2022-12-14 06:33:00,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:33:00,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:33:00,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:33:00,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:33:00,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:32:59" (1/3) ... [2022-12-14 06:33:00,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f8214f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:33:00, skipping insertion in model container [2022-12-14 06:33:00,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:32:59" (2/3) ... [2022-12-14 06:33:00,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f8214f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:33:00, skipping insertion in model container [2022-12-14 06:33:00,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:33:00" (3/3) ... [2022-12-14 06:33:00,275 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_04-munge_nr.i [2022-12-14 06:33:00,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:33:00,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-12-14 06:33:00,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 06:33:00,335 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-14 06:33:00,362 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 06:33:00,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 62 transitions, 132 flow [2022-12-14 06:33:00,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 62 transitions, 132 flow [2022-12-14 06:33:00,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 132 flow [2022-12-14 06:33:00,421 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-12-14 06:33:00,421 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-14 06:33:00,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 0/61 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-14 06:33:00,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 336 [2022-12-14 06:33:01,901 INFO L134 LiptonReduction]: Checked pairs total: 397 [2022-12-14 06:33:01,901 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-12-14 06:33:01,908 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 14 transitions, 36 flow [2022-12-14 06:33:01,917 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 16 states have (on average 1.75) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:01,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:33:01,938 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;@77bf7239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:33:01,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 06:33:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.75) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 06:33:01,943 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:33:01,943 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 06:33:01,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-14 06:33:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:33:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash 233, now seen corresponding path program 1 times [2022-12-14 06:33:01,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:33:01,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244695862] [2022-12-14 06:33:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:33:01,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:33:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:33:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:33:02,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:33:02,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244695862] [2022-12-14 06:33:02,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244695862] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:33:02,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:33:02,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 06:33:02,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78093524] [2022-12-14 06:33:02,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:33:02,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:33:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:33:02,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:33:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:33:02,057 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.75) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-12-14 06:33:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:33:02,080 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2022-12-14 06:33:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:33:02,082 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 [2022-12-14 06:33:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:33:02,088 INFO L225 Difference]: With dead ends: 19 [2022-12-14 06:33:02,088 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 06:33:02,089 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 [2022-12-14 06:33:02,091 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:33:02,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:33:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 06:33:02,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 06:33:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2022-12-14 06:33:02,114 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 1 [2022-12-14 06:33:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:33:02,114 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2022-12-14 06:33:02,114 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) [2022-12-14 06:33:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2022-12-14 06:33:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 06:33:02,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:33:02,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 06:33:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:33:02,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-14 06:33:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:33:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 7051227, now seen corresponding path program 1 times [2022-12-14 06:33:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:33:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181474390] [2022-12-14 06:33:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:33:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:33:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:33:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:33:02,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:33:02,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181474390] [2022-12-14 06:33:02,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181474390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:33:02,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:33:02,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:33:02,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695752693] [2022-12-14 06:33:02,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:33:02,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:33:02,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:33:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:33:02,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:33:02,220 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:33:02,232 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2022-12-14 06:33:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:33:02,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 06:33:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:33:02,234 INFO L225 Difference]: With dead ends: 16 [2022-12-14 06:33:02,234 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 06:33:02,234 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 [2022-12-14 06:33:02,235 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:33:02,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:33:02,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 06:33:02,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 06:33:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-12-14 06:33:02,239 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 4 [2022-12-14 06:33:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:33:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-12-14 06:33:02,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-12-14 06:33:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 06:33:02,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:33:02,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 06:33:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:33:02,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-14 06:33:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:33:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash 7051228, now seen corresponding path program 1 times [2022-12-14 06:33:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:33:02,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826898614] [2022-12-14 06:33:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:33:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:33:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:33:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:33:02,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:33:02,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826898614] [2022-12-14 06:33:02,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826898614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:33:02,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:33:02,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:33:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386551856] [2022-12-14 06:33:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:33:02,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:33:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:33:02,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:33:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:33:02,300 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:33:02,313 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-12-14 06:33:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:33:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 06:33:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:33:02,314 INFO L225 Difference]: With dead ends: 13 [2022-12-14 06:33:02,314 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 06:33:02,314 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 [2022-12-14 06:33:02,315 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:33:02,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:33:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 06:33:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 06:33:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-12-14 06:33:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-12-14 06:33:02,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 4 [2022-12-14 06:33:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:33:02,318 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-12-14 06:33:02,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2022-12-14 06:33:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:33:02,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:33:02,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:33:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:33:02,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-14 06:33:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:33:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 802600994, now seen corresponding path program 1 times [2022-12-14 06:33:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:33:02,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220425943] [2022-12-14 06:33:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:33:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:33:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:33:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:33:02,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:33:02,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220425943] [2022-12-14 06:33:02,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220425943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:33:02,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:33:02,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:33:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998489544] [2022-12-14 06:33:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:33:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:33:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:33:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:33:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:33:02,492 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:33:02,507 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2022-12-14 06:33:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:33:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 06:33:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:33:02,508 INFO L225 Difference]: With dead ends: 14 [2022-12-14 06:33:02,508 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 06:33:02,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:33:02,509 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:33:02,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:33:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 06:33:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-12-14 06:33:02,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-12-14 06:33:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-12-14 06:33:02,512 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2022-12-14 06:33:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:33:02,512 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-12-14 06:33:02,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-12-14 06:33:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:33:02,512 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:33:02,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:33:02,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:33:02,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-12-14 06:33:02,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:33:02,513 INFO L85 PathProgramCache]: Analyzing trace with hash 793663694, now seen corresponding path program 2 times [2022-12-14 06:33:02,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:33:02,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186608083] [2022-12-14 06:33:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:33:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:33:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:33:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:33:02,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:33:02,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186608083] [2022-12-14 06:33:02,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186608083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:33:02,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:33:02,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:33:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891366670] [2022-12-14 06:33:02,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:33:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:33:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:33:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:33:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:33:02,613 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:33:02,623 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-12-14 06:33:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:33:02,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 06:33:02,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:33:02,623 INFO L225 Difference]: With dead ends: 12 [2022-12-14 06:33:02,624 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 06:33:02,624 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 [2022-12-14 06:33:02,625 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:33:02,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:33:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 06:33:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 06:33:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 06:33:02,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-12-14 06:33:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:33:02,626 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 06:33:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:33:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 06:33:02,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 06:33:02,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2022-12-14 06:33:02,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2022-12-14 06:33:02,629 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2022-12-14 06:33:02,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-12-14 06:33:02,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2022-12-14 06:33:02,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-14 06:33:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:33:02,632 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-14 06:33:02,635 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 06:33:02,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 06:33:02,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 06:33:02 BasicIcfg [2022-12-14 06:33:02,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 06:33:02,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 06:33:02,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 06:33:02,638 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 06:33:02,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:33:00" (3/4) ... [2022-12-14 06:33:02,641 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 06:33:02,648 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-14 06:33:02,651 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-14 06:33:02,652 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 06:33:02,652 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 06:33:02,677 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 06:33:02,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 06:33:02,678 INFO L158 Benchmark]: Toolchain (without parser) took 3109.00ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 105.4MB in the beginning and 61.5MB in the end (delta: 43.9MB). Peak memory consumption was 74.6MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,678 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:33:02,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.72ms. Allocated memory is still 140.5MB. Free memory was 105.4MB in the beginning and 78.5MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.10ms. Allocated memory is still 140.5MB. Free memory was 78.5MB in the beginning and 76.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,679 INFO L158 Benchmark]: Boogie Preprocessor took 16.49ms. Allocated memory is still 140.5MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,679 INFO L158 Benchmark]: RCFGBuilder took 284.65ms. Allocated memory is still 140.5MB. Free memory was 74.9MB in the beginning and 62.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,680 INFO L158 Benchmark]: TraceAbstraction took 2368.60ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 61.8MB in the beginning and 64.7MB in the end (delta: -2.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,680 INFO L158 Benchmark]: Witness Printer took 39.42ms. Allocated memory is still 169.9MB. Free memory was 64.7MB in the beginning and 61.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:33:02,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.72ms. Allocated memory is still 140.5MB. Free memory was 105.4MB in the beginning and 78.5MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.10ms. Allocated memory is still 140.5MB. Free memory was 78.5MB in the beginning and 76.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.49ms. Allocated memory is still 140.5MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.65ms. Allocated memory is still 140.5MB. Free memory was 74.9MB in the beginning and 62.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2368.60ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 61.8MB in the beginning and 64.7MB in the end (delta: -2.9MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 39.42ms. Allocated memory is still 169.9MB. Free memory was 64.7MB in the beginning and 61.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 66 PlacesBefore, 18 PlacesAfterwards, 62 TransitionsBefore, 14 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 5 FixpointIterations, 38 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 397 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 338, independent: 304, independent conditional: 0, independent unconditional: 304, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 237, independent: 223, independent conditional: 0, independent unconditional: 223, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 237, independent: 218, independent conditional: 0, independent unconditional: 218, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 77, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 338, independent: 81, independent conditional: 0, independent unconditional: 81, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 237, unknown conditional: 0, unknown unconditional: 237] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 928]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 77 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-14 06:33:02,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7415632d-735c-402c-948f-514baf5b7e5c/bin/utaipan-gh47qXpMRh/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: TRUE