./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS --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 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 --- 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-8393723 [2022-11-19 06:41:17,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:41:17,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:41:17,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:41:17,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:41:17,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:41:17,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:41:17,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:41:17,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:41:17,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:41:17,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:41:17,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:41:17,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:41:17,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:41:17,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:41:17,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:41:17,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:41:17,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:41:17,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:41:17,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:41:17,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:41:17,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:41:17,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:41:17,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:41:17,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:41:17,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:41:17,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:41:17,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:41:17,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:41:17,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:41:17,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:41:17,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:41:17,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:41:17,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:41:17,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:41:17,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:41:17,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:41:17,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:41:17,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:41:17,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:41:17,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:41:17,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 06:41:17,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:41:17,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:41:17,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:41:17,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:41:17,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:41:17,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:41:17,454 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:41:17,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:41:17,455 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:41:17,455 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:41:17,455 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:41:17,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:41:17,455 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:41:17,456 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:41:17,456 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:41:17,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:41:17,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:41:17,457 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:41:17,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 06:41:17,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 06:41:17,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:41:17,458 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:41:17,458 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:41:17,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:41:17,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:41:17,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:41:17,459 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 06:41:17,459 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 06:41:17,459 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 06:41:17,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:41:17,460 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:41:17,460 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:41:17,460 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:41:17,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:41:17,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:41:17,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:41:17,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:41:17,461 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:41:17,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:41:17,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:41:17,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:41:17,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:41:17,462 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_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be74b3f1207f4387a275e1f4e0e57734d5f1b215282bd8d49efde8c6948d207 [2022-11-19 06:41:17,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:41:17,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:41:17,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:41:17,772 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:41:17,773 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:41:17,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-lit/sssc12_variant.i [2022-11-19 06:41:17,845 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/data/da4f990f0/671b8fdf1db44c49adb5d63840ee8663/FLAG0d3bab0bc [2022-11-19 06:41:18,432 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:41:18,433 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/sv-benchmarks/c/pthread-lit/sssc12_variant.i [2022-11-19 06:41:18,447 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/data/da4f990f0/671b8fdf1db44c49adb5d63840ee8663/FLAG0d3bab0bc [2022-11-19 06:41:18,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/data/da4f990f0/671b8fdf1db44c49adb5d63840ee8663 [2022-11-19 06:41:18,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:41:18,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:41:18,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:41:18,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:41:18,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:41:18,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:41:18" (1/1) ... [2022-11-19 06:41:18,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759a80b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:18, skipping insertion in model container [2022-11-19 06:41:18,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:41:18" (1/1) ... [2022-11-19 06:41:18,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:41:18,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:41:19,226 WARN L234 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_89da69a9-e0bb-4789-a224-680a6463fc2d/sv-benchmarks/c/pthread-lit/sssc12_variant.i[46865,46878] [2022-11-19 06:41:19,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:41:19,258 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:41:19,305 WARN L234 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_89da69a9-e0bb-4789-a224-680a6463fc2d/sv-benchmarks/c/pthread-lit/sssc12_variant.i[46865,46878] [2022-11-19 06:41:19,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:41:19,386 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:41:19,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19 WrapperNode [2022-11-19 06:41:19,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:41:19,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:41:19,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:41:19,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:41:19,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,468 INFO L138 Inliner]: procedures = 275, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2022-11-19 06:41:19,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:41:19,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:41:19,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:41:19,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:41:19,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:41:19,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:41:19,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:41:19,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:41:19,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (1/1) ... [2022-11-19 06:41:19,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:41:19,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:41:19,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:41:19,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:41:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 06:41:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-19 06:41:19,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-19 06:41:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:41:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:41:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 06:41:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:41:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:41:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:41:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:41:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:41:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:41:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:41:19,620 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 06:41:19,789 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:41:19,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:41:20,060 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:41:20,099 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:41:20,099 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:41:20,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:20 BoogieIcfgContainer [2022-11-19 06:41:20,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:41:20,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:41:20,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:41:20,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:41:20,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:41:18" (1/3) ... [2022-11-19 06:41:20,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635d98db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:41:20, skipping insertion in model container [2022-11-19 06:41:20,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:41:19" (2/3) ... [2022-11-19 06:41:20,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635d98db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:41:20, skipping insertion in model container [2022-11-19 06:41:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:20" (3/3) ... [2022-11-19 06:41:20,116 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant.i [2022-11-19 06:41:20,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:41:20,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-19 06:41:20,136 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 06:41:20,219 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 06:41:20,251 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 06:41:20,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 100 transitions, 205 flow [2022-11-19 06:41:20,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 100 transitions, 205 flow [2022-11-19 06:41:20,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 100 transitions, 205 flow [2022-11-19 06:41:20,334 INFO L130 PetriNetUnfolder]: 7/117 cut-off events. [2022-11-19 06:41:20,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 06:41:20,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 117 events. 7/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2022-11-19 06:41:20,343 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2022-11-19 06:41:25,082 INFO L134 LiptonReduction]: Checked pairs total: 2316 [2022-11-19 06:41:25,083 INFO L136 LiptonReduction]: Total number of compositions: 113 [2022-11-19 06:41:25,091 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 21 transitions, 47 flow [2022-11-19 06:41:25,109 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101 states, 59 states have (on average 3.1186440677966103) internal successors, (184), 100 states have internal predecessors, (184), 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) [2022-11-19 06:41:25,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:41:25,130 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;@157a44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:41:25,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-19 06:41:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 59 states have (on average 3.1186440677966103) internal successors, (184), 100 states have internal predecessors, (184), 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) [2022-11-19 06:41:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:41:25,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:25,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:41:25,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-11-19 06:41:25,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash 14694, now seen corresponding path program 1 times [2022-11-19 06:41:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:25,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722079815] [2022-11-19 06:41:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:41:25,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:25,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722079815] [2022-11-19 06:41:25,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722079815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:25,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:25,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:41:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195398482] [2022-11-19 06:41:25,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:41:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:41:25,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:41:25,422 INFO L87 Difference]: Start difference. First operand has 101 states, 59 states have (on average 3.1186440677966103) internal successors, (184), 100 states have internal predecessors, (184), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:41:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:25,482 INFO L93 Difference]: Finished difference Result 53 states and 93 transitions. [2022-11-19 06:41:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:41:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 06:41:25,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:25,513 INFO L225 Difference]: With dead ends: 53 [2022-11-19 06:41:25,513 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 06:41:25,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:41:25,518 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 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 [2022-11-19 06:41:25,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:41:25,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 06:41:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-19 06:41:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 2.3846153846153846) internal successors, (93), 52 states have internal predecessors, (93), 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) [2022-11-19 06:41:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 93 transitions. [2022-11-19 06:41:25,573 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 93 transitions. Word has length 2 [2022-11-19 06:41:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:25,573 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 93 transitions. [2022-11-19 06:41:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:41:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 93 transitions. [2022-11-19 06:41:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:41:25,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:25,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:41:25,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:41:25,575 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-11-19 06:41:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash 14670, now seen corresponding path program 1 times [2022-11-19 06:41:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:25,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720299685] [2022-11-19 06:41:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:41:25,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:25,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720299685] [2022-11-19 06:41:25,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720299685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:25,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:25,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:41:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054316925] [2022-11-19 06:41:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:25,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:41:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:41:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:25,837 INFO L87 Difference]: Start difference. First operand 53 states and 93 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:41:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:25,875 INFO L93 Difference]: Finished difference Result 44 states and 76 transitions. [2022-11-19 06:41:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:41:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 06:41:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:25,877 INFO L225 Difference]: With dead ends: 44 [2022-11-19 06:41:25,877 INFO L226 Difference]: Without dead ends: 44 [2022-11-19 06:41:25,878 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 [2022-11-19 06:41:25,879 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1 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 [2022-11-19 06:41:25,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:41:25,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-19 06:41:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-19 06:41:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 43 states have internal predecessors, (76), 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) [2022-11-19 06:41:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 76 transitions. [2022-11-19 06:41:25,886 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 76 transitions. Word has length 2 [2022-11-19 06:41:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:25,887 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 76 transitions. [2022-11-19 06:41:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:41:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 76 transitions. [2022-11-19 06:41:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 06:41:25,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:25,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 06:41:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:41:25,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-11-19 06:41:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 14671, now seen corresponding path program 1 times [2022-11-19 06:41:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788219737] [2022-11-19 06:41:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:41:26,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788219737] [2022-11-19 06:41:26,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788219737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:26,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:26,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:41:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130627209] [2022-11-19 06:41:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:41:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:41:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:26,013 INFO L87 Difference]: Start difference. First operand 44 states and 76 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:41:26,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:26,038 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2022-11-19 06:41:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:41:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 06:41:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:26,042 INFO L225 Difference]: With dead ends: 35 [2022-11-19 06:41:26,042 INFO L226 Difference]: Without dead ends: 35 [2022-11-19 06:41:26,044 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 [2022-11-19 06:41:26,046 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:26,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:41:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-19 06:41:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-19 06:41:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.903225806451613) internal successors, (59), 34 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 59 transitions. [2022-11-19 06:41:26,051 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 59 transitions. Word has length 2 [2022-11-19 06:41:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 59 transitions. [2022-11-19 06:41:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 06:41:26,055 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2022-11-19 06:41:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:41:26,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:26,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:41:26,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:41:26,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-11-19 06:41:26,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash 437411782, now seen corresponding path program 1 times [2022-11-19 06:41:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:26,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879289912] [2022-11-19 06:41:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:26,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:41:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:41:26,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:41:26,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879289912] [2022-11-19 06:41:26,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879289912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:41:26,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:41:26,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:41:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683848592] [2022-11-19 06:41:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:41:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:41:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:41:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:41:26,134 INFO L87 Difference]: Start difference. First operand 35 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:26,164 INFO L93 Difference]: Finished difference Result 31 states and 52 transitions. [2022-11-19 06:41:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:41:26,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:41:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:26,167 INFO L225 Difference]: With dead ends: 31 [2022-11-19 06:41:26,167 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:41:26,167 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 [2022-11-19 06:41:26,168 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:26,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:41:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:41:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-19 06:41:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 30 states have internal predecessors, (52), 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) [2022-11-19 06:41:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 52 transitions. [2022-11-19 06:41:26,173 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 52 transitions. Word has length 5 [2022-11-19 06:41:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:26,177 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 52 transitions. [2022-11-19 06:41:26,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 52 transitions. [2022-11-19 06:41:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:41:26,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:26,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:41:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:41:26,180 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 15 more)] === [2022-11-19 06:41:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash 437411783, now seen corresponding path program 1 times [2022-11-19 06:41:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:26,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158222178] [2022-11-19 06:41:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:26,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:41:26,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:41:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:41:26,311 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:41:26,312 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:41:26,313 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2022-11-19 06:41:26,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2022-11-19 06:41:26,316 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-11-19 06:41:26,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (14 of 18 remaining) [2022-11-19 06:41:26,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 18 remaining) [2022-11-19 06:41:26,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-11-19 06:41:26,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2022-11-19 06:41:26,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2022-11-19 06:41:26,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2022-11-19 06:41:26,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2022-11-19 06:41:26,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2022-11-19 06:41:26,325 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 18 remaining) [2022-11-19 06:41:26,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-11-19 06:41:26,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-11-19 06:41:26,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2022-11-19 06:41:26,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2022-11-19 06:41:26,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2022-11-19 06:41:26,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 18 remaining) [2022-11-19 06:41:26,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:41:26,331 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-19 06:41:26,337 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 06:41:26,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:41:26,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:41:26 BasicIcfg [2022-11-19 06:41:26,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:41:26,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:41:26,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:41:26,374 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:41:26,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:41:20" (3/4) ... [2022-11-19 06:41:26,377 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 06:41:26,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:41:26,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:41:26,439 INFO L158 Benchmark]: Toolchain (without parser) took 7756.44ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 80.9MB in the beginning and 88.2MB in the end (delta: -7.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,439 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:41:26,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.06ms. Allocated memory is still 125.8MB. Free memory was 80.6MB in the beginning and 81.5MB in the end (delta: -854.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.39ms. Allocated memory is still 125.8MB. Free memory was 81.5MB in the beginning and 79.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,440 INFO L158 Benchmark]: Boogie Preprocessor took 52.98ms. Allocated memory is still 125.8MB. Free memory was 79.0MB in the beginning and 77.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,440 INFO L158 Benchmark]: RCFGBuilder took 578.85ms. Allocated memory is still 125.8MB. Free memory was 77.4MB in the beginning and 60.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,440 INFO L158 Benchmark]: TraceAbstraction took 6268.67ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 60.1MB in the beginning and 91.4MB in the end (delta: -31.3MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,441 INFO L158 Benchmark]: Witness Printer took 64.24ms. Allocated memory is still 169.9MB. Free memory was 91.4MB in the beginning and 88.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:41:26,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.06ms. Allocated memory is still 125.8MB. Free memory was 80.6MB in the beginning and 81.5MB in the end (delta: -854.6kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.39ms. Allocated memory is still 125.8MB. Free memory was 81.5MB in the beginning and 79.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.98ms. Allocated memory is still 125.8MB. Free memory was 79.0MB in the beginning and 77.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 578.85ms. Allocated memory is still 125.8MB. Free memory was 77.4MB in the beginning and 60.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6268.67ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 60.1MB in the beginning and 91.4MB in the end (delta: -31.3MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Witness Printer took 64.24ms. Allocated memory is still 169.9MB. Free memory was 91.4MB in the beginning and 88.2MB 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: 4.8s, 97 PlacesBefore, 23 PlacesAfterwards, 100 TransitionsBefore, 21 TransitionsAfterwards, 1680 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 5 ChoiceCompositions, 113 TotalNumberOfCompositions, 2316 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1872, independent: 1798, independent conditional: 0, independent unconditional: 1798, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1148, independent: 1116, independent conditional: 0, independent unconditional: 1116, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1148, independent: 1098, independent conditional: 0, independent unconditional: 1098, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 153, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1872, independent: 682, independent conditional: 0, independent unconditional: 682, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 1148, unknown conditional: 0, unknown unconditional: 1148] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1007] 0 volatile int next; [L1005] 0 int *data; [L1006] 0 volatile int len; [L1008] 0 volatile int lock; [L1040] 0 pthread_t t; [L1041] 0 lock=0 [L1042] 0 next = 0 [L1043] 0 len = __VERIFIER_nondet_int() [L1044] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1044] RET 0 assume_abort_if_not(len > 0) [L1045] 0 data = malloc(sizeof(int) * len) [L1046] COND TRUE 0 1 [L1047] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [\old(argc)=1073741827, argc=1073741827, argv={1073741825:1073741826}, argv={1073741825:1073741826}, data={-2:0}, len=1073741824, lock=0, next=0, pthread_create(&t, 0, thr, 0)=-1, t={3:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] 1 data[c] = 0 - 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: 1039]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1047]: 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. - 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: -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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 134 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! [2022-11-19 06:41:26,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da69a9-e0bb-4789-a224-680a6463fc2d/bin/utaipan-I9t0OCRTmS/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)