./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/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_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- 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 08:12:12,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:12:12,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:12:12,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:12:12,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:12:12,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:12:12,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:12:12,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:12:12,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:12:12,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:12:12,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:12:12,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:12:12,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:12:12,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:12:12,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:12:12,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:12:12,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:12:12,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:12:12,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:12:12,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:12:12,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:12:12,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:12:12,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:12:12,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:12:12,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:12:12,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:12:12,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:12:12,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:12:12,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:12:12,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:12:12,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:12:12,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:12:12,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:12:12,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:12:12,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:12:12,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:12:12,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:12:12,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:12:12,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:12:12,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:12:12,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:12:12,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 08:12:12,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:12:12,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:12:12,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:12:12,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:12:12,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:12:12,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:12:12,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:12:12,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:12:12,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:12:12,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:12:12,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:12:12,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:12:12,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:12:12,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:12:12,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:12:12,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:12:12,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:12:12,506 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:12:12,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:12:12,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:12:12,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:12:12,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:12:12,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:12:12,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:12:12,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:12:12,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:12:12,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:12:12,510 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 08:12:12,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:12:12,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:12:12,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:12:12,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:12:12,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:12:12,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:12:12,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:12,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:12:12,512 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:12:12,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:12:12,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:12:12,513 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:12:12,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:12:12,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:12:12,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:12:12,514 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_1f44381e-98a1-41f4-9720-8c09a0d495ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2022-11-19 08:12:12,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:12:12,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:12:12,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:12:12,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:12:12,878 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:12:12,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-11-19 08:12:12,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/data/11deecd31/376f3fde29ea458c97a211165a6acee0/FLAG423a985f0 [2022-11-19 08:12:13,682 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:12:13,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2022-11-19 08:12:13,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/data/11deecd31/376f3fde29ea458c97a211165a6acee0/FLAG423a985f0 [2022-11-19 08:12:13,937 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/data/11deecd31/376f3fde29ea458c97a211165a6acee0 [2022-11-19 08:12:13,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:12:13,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:12:13,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:13,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:12:13,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:12:13,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:13" (1/1) ... [2022-11-19 08:12:13,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261559b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:13, skipping insertion in model container [2022-11-19 08:12:13,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:13" (1/1) ... [2022-11-19 08:12:13,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:12:14,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:12:14,581 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_1f44381e-98a1-41f4-9720-8c09a0d495ef/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-11-19 08:12:14,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:14,639 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:12:14,699 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_1f44381e-98a1-41f4-9720-8c09a0d495ef/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i[30176,30189] [2022-11-19 08:12:14,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:14,774 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:12:14,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14 WrapperNode [2022-11-19 08:12:14,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:14,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:14,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:12:14,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:12:14,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,877 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2022-11-19 08:12:14,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:14,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:12:14,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:12:14,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:12:14,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:12:14,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:12:14,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:12:14,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:12:14,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (1/1) ... [2022-11-19 08:12:14,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:15,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:15,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:12:15,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f44381e-98a1-41f4-9720-8c09a0d495ef/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:12:15,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:12:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:12:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 08:12:15,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:12:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:12:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-19 08:12:15,093 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-19 08:12:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:12:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:12:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:12:15,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:12:15,096 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 08:12:15,301 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:12:15,303 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:12:15,839 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:12:15,849 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:12:15,849 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-19 08:12:15,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:12:15 BoogieIcfgContainer [2022-11-19 08:12:15,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:12:15,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:12:15,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:12:15,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:12:15,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:12:13" (1/3) ... [2022-11-19 08:12:15,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39546ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:12:15, skipping insertion in model container [2022-11-19 08:12:15,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:14" (2/3) ... [2022-11-19 08:12:15,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39546ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:12:15, skipping insertion in model container [2022-11-19 08:12:15,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:12:15" (3/3) ... [2022-11-19 08:12:15,889 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2022-11-19 08:12:15,913 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 08:12:15,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:12:15,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-19 08:12:15,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:12:16,060 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-19 08:12:16,137 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:12:16,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 185 transitions, 378 flow [2022-11-19 08:12:16,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 185 transitions, 378 flow [2022-11-19 08:12:16,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 185 transitions, 378 flow [2022-11-19 08:12:16,272 INFO L130 PetriNetUnfolder]: 17/241 cut-off events. [2022-11-19 08:12:16,273 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-19 08:12:16,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 17/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 707 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-11-19 08:12:16,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 8556 [2022-11-19 08:12:23,947 INFO L134 LiptonReduction]: Checked pairs total: 59875 [2022-11-19 08:12:23,947 INFO L136 LiptonReduction]: Total number of compositions: 163 [2022-11-19 08:12:23,959 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 76 transitions, 160 flow [2022-11-19 08:12:24,052 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1053 states, 999 states have (on average 2.2572572572572573) internal successors, (2255), 1052 states have internal predecessors, (2255), 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 08:12:24,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:12:24,087 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;@55a11c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:12:24,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-19 08:12:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 999 states have (on average 2.2572572572572573) internal successors, (2255), 1052 states have internal predecessors, (2255), 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 08:12:24,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:12:24,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:24,100 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:12:24,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 08:12:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 668, now seen corresponding path program 1 times [2022-11-19 08:12:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:24,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719638953] [2022-11-19 08:12:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:24,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:24,276 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 08:12:24,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:24,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719638953] [2022-11-19 08:12:24,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719638953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:24,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:24,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:12:24,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714319971] [2022-11-19 08:12:24,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:12:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:12:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:12:24,329 INFO L87 Difference]: Start difference. First operand has 1053 states, 999 states have (on average 2.2572572572572573) internal successors, (2255), 1052 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:24,464 INFO L93 Difference]: Finished difference Result 987 states and 1887 transitions. [2022-11-19 08:12:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:12:24,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-19 08:12:24,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:24,498 INFO L225 Difference]: With dead ends: 987 [2022-11-19 08:12:24,499 INFO L226 Difference]: Without dead ends: 985 [2022-11-19 08:12:24,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:12:24,507 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:24,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:12:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-11-19 08:12:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 985. [2022-11-19 08:12:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 948 states have (on average 1.9873417721518987) internal successors, (1884), 984 states have internal predecessors, (1884), 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 08:12:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1884 transitions. [2022-11-19 08:12:24,641 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1884 transitions. Word has length 1 [2022-11-19 08:12:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:24,642 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1884 transitions. [2022-11-19 08:12:24,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1884 transitions. [2022-11-19 08:12:24,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:12:24,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:24,645 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:12:24,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:12:24,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 08:12:24,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:24,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1822758950, now seen corresponding path program 1 times [2022-11-19 08:12:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:24,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117087167] [2022-11-19 08:12:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:12:24,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:12:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:12:24,887 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:12:24,887 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:12:24,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-19 08:12:24,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2022-11-19 08:12:24,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2022-11-19 08:12:24,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2022-11-19 08:12:24,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2022-11-19 08:12:24,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2022-11-19 08:12:24,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2022-11-19 08:12:24,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2022-11-19 08:12:24,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2022-11-19 08:12:24,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2022-11-19 08:12:24,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2022-11-19 08:12:24,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2022-11-19 08:12:24,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2022-11-19 08:12:24,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2022-11-19 08:12:24,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2022-11-19 08:12:24,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2022-11-19 08:12:24,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2022-11-19 08:12:24,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2022-11-19 08:12:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:12:24,914 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:12:24,916 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:12:24,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 08:12:24,987 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 08:12:25,001 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:12:25,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 256 transitions, 530 flow [2022-11-19 08:12:25,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 256 transitions, 530 flow [2022-11-19 08:12:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 256 transitions, 530 flow [2022-11-19 08:12:25,121 INFO L130 PetriNetUnfolder]: 31/399 cut-off events. [2022-11-19 08:12:25,122 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-19 08:12:25,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 399 events. 31/399 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1559 event pairs, 0 based on Foata normal form. 0/338 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2022-11-19 08:12:25,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 28152 [2022-11-19 08:12:34,127 INFO L134 LiptonReduction]: Checked pairs total: 243156 [2022-11-19 08:12:34,127 INFO L136 LiptonReduction]: Total number of compositions: 217 [2022-11-19 08:12:34,129 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 116 places, 127 transitions, 272 flow [2022-11-19 08:12:36,079 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 46428 states, 46031 states have (on average 3.2750103191327584) internal successors, (150752), 46427 states have internal predecessors, (150752), 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 08:12:36,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:12:36,084 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;@55a11c50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:12:36,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-19 08:12:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 46428 states, 46031 states have (on average 3.2750103191327584) internal successors, (150752), 46427 states have internal predecessors, (150752), 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 08:12:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-19 08:12:36,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:36,316 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-19 08:12:36,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 08:12:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1194, now seen corresponding path program 1 times [2022-11-19 08:12:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:36,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138367277] [2022-11-19 08:12:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:36,358 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 08:12:36,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:36,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138367277] [2022-11-19 08:12:36,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138367277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:36,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:36,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-19 08:12:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421252781] [2022-11-19 08:12:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:36,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:12:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:12:36,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:12:36,446 INFO L87 Difference]: Start difference. First operand has 46428 states, 46031 states have (on average 3.2750103191327584) internal successors, (150752), 46427 states have internal predecessors, (150752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:37,752 INFO L93 Difference]: Finished difference Result 42614 states and 122644 transitions. [2022-11-19 08:12:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:12:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-19 08:12:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:38,268 INFO L225 Difference]: With dead ends: 42614 [2022-11-19 08:12:38,268 INFO L226 Difference]: Without dead ends: 42610 [2022-11-19 08:12:38,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:12:38,281 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:38,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:12:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42610 states. [2022-11-19 08:12:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42610 to 42610. [2022-11-19 08:12:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42610 states, 42359 states have (on average 2.8951580537784176) internal successors, (122636), 42609 states have internal predecessors, (122636), 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 08:12:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42610 states to 42610 states and 122636 transitions. [2022-11-19 08:12:40,618 INFO L78 Accepts]: Start accepts. Automaton has 42610 states and 122636 transitions. Word has length 1 [2022-11-19 08:12:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:40,618 INFO L495 AbstractCegarLoop]: Abstraction has 42610 states and 122636 transitions. [2022-11-19 08:12:40,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42610 states and 122636 transitions. [2022-11-19 08:12:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:12:40,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:40,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:40,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:12:40,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 08:12:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2040520957, now seen corresponding path program 1 times [2022-11-19 08:12:40,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:40,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603065720] [2022-11-19 08:12:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:41,059 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 08:12:41,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:41,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603065720] [2022-11-19 08:12:41,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603065720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:41,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:41,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:12:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365509470] [2022-11-19 08:12:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:41,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:41,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:41,065 INFO L87 Difference]: Start difference. First operand 42610 states and 122636 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 08:12:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:41,740 INFO L93 Difference]: Finished difference Result 42597 states and 122622 transitions. [2022-11-19 08:12:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:41,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-19 08:12:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:42,048 INFO L225 Difference]: With dead ends: 42597 [2022-11-19 08:12:42,048 INFO L226 Difference]: Without dead ends: 42597 [2022-11-19 08:12:42,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:12:42,052 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:42,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 130 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:12:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42597 states. [2022-11-19 08:12:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42597 to 42597. [2022-11-19 08:12:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42597 states, 42348 states have (on average 2.8955794842731652) internal successors, (122622), 42596 states have internal predecessors, (122622), 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 08:12:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42597 states to 42597 states and 122622 transitions. [2022-11-19 08:12:43,889 INFO L78 Accepts]: Start accepts. Automaton has 42597 states and 122622 transitions. Word has length 10 [2022-11-19 08:12:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:43,889 INFO L495 AbstractCegarLoop]: Abstraction has 42597 states and 122622 transitions. [2022-11-19 08:12:43,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 08:12:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 42597 states and 122622 transitions. [2022-11-19 08:12:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:12:43,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:43,900 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:12:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:12:43,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 08:12:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1738925066, now seen corresponding path program 1 times [2022-11-19 08:12:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:43,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189085773] [2022-11-19 08:12:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:12:43,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:12:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:12:43,958 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:12:43,958 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:12:43,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-11-19 08:12:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-11-19 08:12:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-11-19 08:12:43,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-11-19 08:12:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-11-19 08:12:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-11-19 08:12:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-11-19 08:12:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-11-19 08:12:43,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2022-11-19 08:12:43,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-11-19 08:12:43,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-11-19 08:12:43,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-11-19 08:12:43,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-11-19 08:12:43,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-11-19 08:12:43,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-11-19 08:12:43,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-11-19 08:12:43,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-11-19 08:12:43,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-11-19 08:12:43,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-11-19 08:12:43,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-11-19 08:12:43,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-11-19 08:12:43,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-11-19 08:12:43,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-11-19 08:12:43,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-11-19 08:12:43,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:12:43,964 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 08:12:43,965 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:12:43,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 08:12:44,260 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-19 08:12:44,267 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:12:44,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 327 transitions, 684 flow [2022-11-19 08:12:44,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 327 transitions, 684 flow [2022-11-19 08:12:44,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 327 transitions, 684 flow [2022-11-19 08:12:44,480 INFO L130 PetriNetUnfolder]: 50/602 cut-off events. [2022-11-19 08:12:44,480 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-19 08:12:44,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 602 events. 50/602 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2661 event pairs, 1 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 407. Up to 16 conditions per place. [2022-11-19 08:12:44,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 57132 [2022-11-19 08:12:55,890 INFO L134 LiptonReduction]: Checked pairs total: 527196 [2022-11-19 08:12:55,891 INFO L136 LiptonReduction]: Total number of compositions: 271 [2022-11-19 08:12:55,892 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 158 places, 174 transitions, 378 flow