./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/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_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 --- 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 07:01:01,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:01:01,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:01:01,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:01:01,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:01:01,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:01:01,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:01:01,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:01:01,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:01:01,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:01:01,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:01:01,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:01:01,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:01:01,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:01:01,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:01:01,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:01:01,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:01:01,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:01:01,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:01:01,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:01:01,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:01:01,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:01:01,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:01:01,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:01:01,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:01:01,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:01:01,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:01:01,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:01:01,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:01:01,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:01:01,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:01:01,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:01:01,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:01:01,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:01:01,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:01:01,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:01:01,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:01:01,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:01:01,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:01:01,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:01:01,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:01:01,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:01:01,482 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:01:01,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:01:01,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:01:01,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:01:01,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:01:01,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:01:01,484 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:01:01,484 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:01:01,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:01:01,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:01:01,484 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:01:01,485 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:01:01,485 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:01:01,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:01:01,485 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:01:01,486 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:01:01,486 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:01:01,486 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:01:01,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:01:01,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:01:01,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:01:01,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:01:01,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:01:01,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:01:01,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:01:01,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:01:01,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:01:01,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:01:01,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:01:01,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:01:01,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:01:01,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:01:01,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:01,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:01:01,497 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:01:01,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:01:01,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:01:01,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:01:01,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:01:01,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:01:01,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:01:01,499 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_4f19145b-7c8c-4c60-b817-92b004757845/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608a161795639c070a2e0dd9cb77ec327f896e40581ac2ba975f6275c137af77 [2022-11-19 07:01:01,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:01:01,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:01:01,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:01:01,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:01:01,903 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:01:01,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-11-19 07:01:01,991 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/data/7dd3174f4/72f4b5dbbb9443bdae2039c3fe9a5eda/FLAG04d13c5b6 [2022-11-19 07:01:02,630 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:01:02,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2022-11-19 07:01:02,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/data/7dd3174f4/72f4b5dbbb9443bdae2039c3fe9a5eda/FLAG04d13c5b6 [2022-11-19 07:01:03,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/data/7dd3174f4/72f4b5dbbb9443bdae2039c3fe9a5eda [2022-11-19 07:01:03,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:01:03,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:01:03,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:03,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:01:03,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:01:03,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387842cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03, skipping insertion in model container [2022-11-19 07:01:03,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:01:03,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:01:03,275 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_4f19145b-7c8c-4c60-b817-92b004757845/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i[295,308] [2022-11-19 07:01:03,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:03,308 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:01:03,321 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_4f19145b-7c8c-4c60-b817-92b004757845/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i[295,308] [2022-11-19 07:01:03,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:03,343 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:01:03,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03 WrapperNode [2022-11-19 07:01:03,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:03,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:03,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:01:03,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:01:03,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,383 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-11-19 07:01:03,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:03,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:01:03,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:01:03,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:01:03,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:01:03,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:01:03,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:01:03,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:01:03,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (1/1) ... [2022-11-19 07:01:03,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:03,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:03,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:01:03,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:01:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:01:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-11-19 07:01:03,545 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-11-19 07:01:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:01:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:01:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:01:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:01:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:01:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:01:03,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:01:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:01:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:01:03,655 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:01:03,658 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:01:03,844 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:01:03,879 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:01:03,880 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:01:03,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:03 BoogieIcfgContainer [2022-11-19 07:01:03,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:01:03,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:01:03,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:01:03,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:01:03,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:01:03" (1/3) ... [2022-11-19 07:01:03,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d39988d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:03, skipping insertion in model container [2022-11-19 07:01:03,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:03" (2/3) ... [2022-11-19 07:01:03,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d39988d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:03, skipping insertion in model container [2022-11-19 07:01:03,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:03" (3/3) ... [2022-11-19 07:01:03,901 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2022-11-19 07:01:03,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:01:03,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:01:04,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:01:04,029 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@11981209, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:01:04,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:01:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:01:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:01:04,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:04,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:01:04,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1797267687, now seen corresponding path program 1 times [2022-11-19 07:01:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:04,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354459125] [2022-11-19 07:01:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:04,560 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 07:01:04,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:04,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354459125] [2022-11-19 07:01:04,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354459125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:04,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:04,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:04,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876866528] [2022-11-19 07:01:04,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:04,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:01:04,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:01:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:04,604 INFO L87 Difference]: Start difference. First operand has 13 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:04,726 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-11-19 07:01:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:01:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:01:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:04,736 INFO L225 Difference]: With dead ends: 26 [2022-11-19 07:01:04,737 INFO L226 Difference]: Without dead ends: 12 [2022-11-19 07:01:04,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:01:04,744 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:04,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:01:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-19 07:01:04,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-19 07:01:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:01:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2022-11-19 07:01:04,791 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 6 [2022-11-19 07:01:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:04,791 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2022-11-19 07:01:04,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2022-11-19 07:01:04,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:01:04,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:04,796 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:04,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:01:04,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1190020852, now seen corresponding path program 1 times [2022-11-19 07:01:04,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:04,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673221768] [2022-11-19 07:01:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:04,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:01:04,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:01:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:01:04,919 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:01:04,927 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:01:04,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:01:04,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:01:04,939 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:01:04,944 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:01:04,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:01:04 BoogieIcfgContainer [2022-11-19 07:01:04,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:01:04,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:01:04,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:01:04,983 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:01:04,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:03" (3/4) ... [2022-11-19 07:01:04,985 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 07:01:05,038 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:01:05,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:01:05,040 INFO L158 Benchmark]: Toolchain (without parser) took 2020.07ms. Allocated memory is still 132.1MB. Free memory was 102.1MB in the beginning and 99.2MB in the end (delta: 2.9MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-19 07:01:05,041 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 83.9MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:01:05,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.44ms. Allocated memory is still 132.1MB. Free memory was 101.8MB in the beginning and 109.4MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:01:05,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.72ms. Allocated memory is still 132.1MB. Free memory was 109.4MB in the beginning and 108.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:01:05,048 INFO L158 Benchmark]: Boogie Preprocessor took 42.48ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 107.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:01:05,048 INFO L158 Benchmark]: RCFGBuilder took 455.83ms. Allocated memory is still 132.1MB. Free memory was 107.1MB in the beginning and 97.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:01:05,049 INFO L158 Benchmark]: TraceAbstraction took 1092.95ms. Allocated memory is still 132.1MB. Free memory was 96.4MB in the beginning and 101.3MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:01:05,050 INFO L158 Benchmark]: Witness Printer took 57.05ms. Allocated memory is still 132.1MB. Free memory was 101.3MB in the beginning and 99.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:01:05,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 83.9MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.44ms. Allocated memory is still 132.1MB. Free memory was 101.8MB in the beginning and 109.4MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.72ms. Allocated memory is still 132.1MB. Free memory was 109.4MB in the beginning and 108.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.48ms. Allocated memory is still 132.1MB. Free memory was 108.3MB in the beginning and 107.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 455.83ms. Allocated memory is still 132.1MB. Free memory was 107.1MB in the beginning and 97.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1092.95ms. Allocated memory is still 132.1MB. Free memory was 96.4MB in the beginning and 101.3MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.05ms. Allocated memory is still 132.1MB. Free memory was 101.3MB in the beginning and 99.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L35] struct mutex m; [L36] m.is_locked = 0 VAL [m={5:0}] [L38] CALL mutex_lock(&m) VAL [a={5:0}] [L23] EXPR a->is_locked VAL [a={5:0}, a={5:0}, a->is_locked=0] [L23] COND FALSE !(a->is_locked == 1) [L24] a->is_locked = 1 [L38] RET mutex_lock(&m) VAL [m={5:0}] [L42] CALL mutex_lock(&m) VAL [a={5:0}] [L23] EXPR a->is_locked VAL [a={5:0}, a={5:0}, a->is_locked=1] [L23] COND TRUE a->is_locked == 1 [L23] CALL err() [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 07:01:05,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f19145b-7c8c-4c60-b817-92b004757845/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