./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/gcd-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/gcd-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh --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 abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:02:49,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:02:49,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:02:49,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:02:49,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:02:49,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:02:49,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:02:49,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:02:49,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:02:49,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:02:49,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:02:49,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:02:49,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:02:49,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:02:49,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:02:49,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:02:49,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:02:49,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:02:49,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:02:49,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:02:49,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:02:49,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:02:49,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:02:49,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:02:49,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:02:49,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:02:49,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:02:49,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:02:49,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:02:49,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:02:49,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:02:49,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:02:49,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:02:49,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:02:49,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:02:49,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:02:49,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:02:49,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:02:49,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:02:49,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:02:49,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:02:49,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-12-14 14:02:49,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:02:49,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:02:49,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:02:49,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:02:49,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:02:49,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:02:49,336 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:02:49,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:02:49,337 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:02:49,337 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:02:49,337 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:02:49,337 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:02:49,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:02:49,337 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:02:49,338 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-14 14:02:49,339 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:02:49,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:02:49,339 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:02:49,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:02:49,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:02:49,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:02:49,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:02:49,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:02:49,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:02:49,340 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_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2022-12-14 14:02:49,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:02:49,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:02:49,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:02:49,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:02:49,528 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:02:49,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-12-14 14:02:52,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:02:52,300 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:02:52,301 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/sv-benchmarks/c/pthread-atomic/gcd-2.i [2022-12-14 14:02:52,312 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/data/7780fd94b/cf7db7d8d0444df999021a050e0a60da/FLAG3cf91fe9c [2022-12-14 14:02:52,654 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/data/7780fd94b/cf7db7d8d0444df999021a050e0a60da [2022-12-14 14:02:52,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:02:52,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:02:52,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:02:52,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:02:52,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:02:52,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:52,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6196f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52, skipping insertion in model container [2022-12-14 14:02:52,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:52,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:02:52,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:02:52,801 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-12-14 14:02:52,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:02:52,915 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:02:52,924 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/sv-benchmarks/c/pthread-atomic/gcd-2.i[938,951] [2022-12-14 14:02:52,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:02:52,969 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:02:52,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52 WrapperNode [2022-12-14 14:02:52,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:02:52,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:02:52,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:02:52,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:02:52,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:52,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,003 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 182 [2022-12-14 14:02:53,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:02:53,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:02:53,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:02:53,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:02:53,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,026 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:02:53,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:02:53,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:02:53,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:02:53,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (1/1) ... [2022-12-14 14:02:53,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:02:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:02:53,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:02:53,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:02:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:02:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:02:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:02:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:02:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:02:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-12-14 14:02:53,092 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-12-14 14:02:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-12-14 14:02:53,092 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-12-14 14:02:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:02:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:02:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:02:53,094 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 14:02:53,194 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:02:53,196 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:02:53,466 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:02:53,527 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:02:53,528 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 14:02:53,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:53 BoogieIcfgContainer [2022-12-14 14:02:53,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:02:53,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:02:53,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:02:53,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:02:53,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:02:52" (1/3) ... [2022-12-14 14:02:53,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e13f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:02:53, skipping insertion in model container [2022-12-14 14:02:53,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:02:52" (2/3) ... [2022-12-14 14:02:53,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e13f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:02:53, skipping insertion in model container [2022-12-14 14:02:53,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:53" (3/3) ... [2022-12-14 14:02:53,536 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2022-12-14 14:02:53,542 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 14:02:53,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:02:53,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-12-14 14:02:53,550 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 14:02:53,595 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 14:02:53,625 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 14:02:53,638 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 205 transitions, 426 flow [2022-12-14 14:02:53,641 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 205 transitions, 426 flow [2022-12-14 14:02:53,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 205 transitions, 426 flow [2022-12-14 14:02:53,708 INFO L130 PetriNetUnfolder]: 12/203 cut-off events. [2022-12-14 14:02:53,708 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 14:02:53,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 12/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-14 14:02:53,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 1836 [2022-12-14 14:03:07,651 INFO L134 LiptonReduction]: Checked pairs total: 6601 [2022-12-14 14:03:07,652 INFO L136 LiptonReduction]: Total number of compositions: 249 [2022-12-14 14:03:07,659 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 45 transitions, 106 flow [2022-12-14 14:03:07,701 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:07,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:03:07,720 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;@22b81cb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:03:07,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-12-14 14:03:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-12-14 14:03:07,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:03:07,726 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-12-14 14:03:07,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-14 14:03:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:03:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash 887, now seen corresponding path program 1 times [2022-12-14 14:03:07,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:03:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12633422] [2022-12-14 14:03:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:03:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:03:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:03:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:03:07,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:03:07,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12633422] [2022-12-14 14:03:07,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12633422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:03:07,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:03:07,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-14 14:03:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450873560] [2022-12-14 14:03:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:03:07,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:03:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:03:07,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:03:07,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:03:07,875 INFO L87 Difference]: Start difference. First operand has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:03:07,917 INFO L93 Difference]: Finished difference Result 127 states and 299 transitions. [2022-12-14 14:03:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:03:07,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-12-14 14:03:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:03:07,928 INFO L225 Difference]: With dead ends: 127 [2022-12-14 14:03:07,928 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 14:03:07,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:03:07,932 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:03:07,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:03:07,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 14:03:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-14 14:03:07,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.4235294117647057) internal successors, (206), 85 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 206 transitions. [2022-12-14 14:03:07,968 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 206 transitions. Word has length 1 [2022-12-14 14:03:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:03:07,969 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 206 transitions. [2022-12-14 14:03:07,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 206 transitions. [2022-12-14 14:03:07,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 14:03:07,970 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:03:07,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 14:03:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:03:07,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-14 14:03:07,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:03:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 173691289, now seen corresponding path program 1 times [2022-12-14 14:03:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:03:07,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397428199] [2022-12-14 14:03:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:03:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:03:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:03:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:03:08,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:03:08,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397428199] [2022-12-14 14:03:08,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397428199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:03:08,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:03:08,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:03:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122142817] [2022-12-14 14:03:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:03:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:03:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:03:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:03:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:03:08,067 INFO L87 Difference]: Start difference. First operand 86 states and 206 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:03:08,104 INFO L93 Difference]: Finished difference Result 106 states and 249 transitions. [2022-12-14 14:03:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:03:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 14:03:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:03:08,106 INFO L225 Difference]: With dead ends: 106 [2022-12-14 14:03:08,107 INFO L226 Difference]: Without dead ends: 96 [2022-12-14 14:03:08,107 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 [2022-12-14 14:03:08,108 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:03:08,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:03:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-14 14:03:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-12-14 14:03:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.3466666666666667) internal successors, (176), 75 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 176 transitions. [2022-12-14 14:03:08,114 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 176 transitions. Word has length 6 [2022-12-14 14:03:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:03:08,114 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 176 transitions. [2022-12-14 14:03:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:03:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 176 transitions. [2022-12-14 14:03:08,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 14:03:08,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:03:08,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:03:08,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:03:08,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-12-14 14:03:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:03:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2018199776, now seen corresponding path program 1 times [2022-12-14 14:03:08,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:03:08,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043964704] [2022-12-14 14:03:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:03:08,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:03:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:03:08,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:03:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:03:08,187 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:03:08,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:03:08,188 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2022-12-14 14:03:08,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2022-12-14 14:03:08,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2022-12-14 14:03:08,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2022-12-14 14:03:08,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2022-12-14 14:03:08,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2022-12-14 14:03:08,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2022-12-14 14:03:08,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:03:08,195 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 14:03:08,200 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-14 14:03:08,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:03:08,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:03:08 BasicIcfg [2022-12-14 14:03:08,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:03:08,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:03:08,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:03:08,220 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:03:08,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:02:53" (3/4) ... [2022-12-14 14:03:08,222 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:03:08,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:03:08,223 INFO L158 Benchmark]: Toolchain (without parser) took 15566.24ms. Allocated memory is still 260.0MB. Free memory was 226.7MB in the beginning and 121.7MB in the end (delta: 105.0MB). Peak memory consumption was 105.0MB. Max. memory is 16.1GB. [2022-12-14 14:03:08,223 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory was 100.4MB in the beginning and 100.4MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:03:08,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.88ms. Allocated memory is still 260.0MB. Free memory was 226.7MB in the beginning and 205.7MB in the end (delta: 21.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 14:03:08,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.19ms. Allocated memory is still 260.0MB. Free memory was 205.7MB in the beginning and 203.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:03:08,224 INFO L158 Benchmark]: Boogie Preprocessor took 24.38ms. Allocated memory is still 260.0MB. Free memory was 203.6MB in the beginning and 201.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:03:08,224 INFO L158 Benchmark]: RCFGBuilder took 500.45ms. Allocated memory is still 260.0MB. Free memory was 201.5MB in the beginning and 173.2MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-14 14:03:08,224 INFO L158 Benchmark]: TraceAbstraction took 14687.91ms. Allocated memory is still 260.0MB. Free memory was 173.2MB in the beginning and 121.7MB in the end (delta: 51.5MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2022-12-14 14:03:08,224 INFO L158 Benchmark]: Witness Printer took 2.66ms. Allocated memory is still 260.0MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:03:08,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory was 100.4MB in the beginning and 100.4MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.88ms. Allocated memory is still 260.0MB. Free memory was 226.7MB in the beginning and 205.7MB in the end (delta: 21.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.19ms. Allocated memory is still 260.0MB. Free memory was 205.7MB in the beginning and 203.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.38ms. Allocated memory is still 260.0MB. Free memory was 203.6MB in the beginning and 201.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 500.45ms. Allocated memory is still 260.0MB. Free memory was 201.5MB in the beginning and 173.2MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14687.91ms. Allocated memory is still 260.0MB. Free memory was 173.2MB in the beginning and 121.7MB in the end (delta: 51.5MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. * Witness Printer took 2.66ms. Allocated memory is still 260.0MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.0s, 200 PlacesBefore, 48 PlacesAfterwards, 205 TransitionsBefore, 45 TransitionsAfterwards, 1836 CoEnabledTransitionPairs, 7 FixpointIterations, 139 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 7 ConcurrentYvCompositions, 8 ChoiceCompositions, 249 TotalNumberOfCompositions, 6601 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4260, independent: 4077, independent conditional: 0, independent unconditional: 4077, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1666, independent: 1641, independent conditional: 0, independent unconditional: 1641, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1666, independent: 1400, independent conditional: 0, independent unconditional: 1400, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 266, independent: 241, independent conditional: 0, independent unconditional: 241, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 236, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4260, independent: 2436, independent conditional: 0, independent unconditional: 2436, dependent: 158, dependent conditional: 0, dependent unconditional: 158, unknown: 1666, unknown conditional: 0, unknown unconditional: 1666] , Statistics on independence cache: Total cache size (in pairs): 293, Positive cache size: 279, Positive conditional cache size: 0, Positive unconditional cache size: 279, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 709]: Data race detected Data race detected The following path leads to a data race: [L695] 0 unsigned a, b; [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in [L727] 0 b=b_in [L728] 0 pthread_t t1, t2; [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=1, \old(b_in)=12, a=-4294967295, a_in=1, b=-4294967284, b_in=12, pthread_create(&t1, 0, dec_a, 0)=-2, t1={9:0}, t2={10:0}] [L709] 1 a!=b VAL [a=-4294967295, arg={0:0}, arg={0:0}, b=-4294967284] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=1, \old(b_in)=12, a=-4294967295, a_in=1, b=-4294967284, b_in=12, pthread_create(&t2, 0, dec_b, 0)=-1, t1={9:0}, t2={10:0}] [L718] 2 a!=b [L718] COND TRUE 2 a!=b VAL [a=-4294967295, arg={0:0}, arg={0:0}, b=-4294967284] [L720] CALL 2 __VERIFIER_atomic_dec_b() [L703] 2 b>a [L703] COND TRUE 2 b>a [L704] EXPR 2 b-a [L704] 2 b=b-a [L720] RET 2 __VERIFIER_atomic_dec_b() [L709] 1 a!=b VAL [a=-4294967295, arg={0:0}, arg={0:0}, b=11] Now there is a data race on ~b~0 between C: b=b-a [704] and C: a!=b [709] - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 230 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 15 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=619occurred 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, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2022-12-14 14:03:08,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4051f30-ad2a-464c-ab3b-1002a4d5f133/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE