./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/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_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/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_5aaff2a9-9b53-4bd7-b859-79271189cac5/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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:19:43,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:19:43,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:19:43,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:19:43,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:19:43,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:19:43,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:19:43,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:19:43,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:19:43,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:19:43,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:19:43,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:19:43,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:19:43,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:19:43,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:19:43,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:19:43,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:19:43,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:19:43,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:19:43,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:19:43,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:19:43,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:19:43,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:19:43,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:19:43,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:19:43,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:19:43,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:19:43,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:19:43,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:19:43,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:19:43,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:19:43,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:19:43,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:19:43,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:19:43,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:19:43,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:19:43,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:19:43,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:19:43,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:19:43,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:19:43,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:19:43,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 07:19:43,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:19:43,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:19:43,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:19:43,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:19:43,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:19:43,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:19:43,455 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:19:43,455 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:19:43,455 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:19:43,455 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:19:43,457 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:19:43,457 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:19:43,457 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:19:43,457 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:19:43,458 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:19:43,458 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:19:43,458 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:19:43,459 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:19:43,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:19:43,460 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:19:43,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:19:43,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:19:43,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:19:43,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:19:43,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:19:43,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:19:43,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:19:43,463 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 07:19:43,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:19:43,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:19:43,464 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:19:43,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:19:43,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:19:43,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:19:43,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:19:43,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:19:43,466 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:19:43,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:19:43,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:19:43,467 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:19:43,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:19:43,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:19:43,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:19:43,468 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_5aaff2a9-9b53-4bd7-b859-79271189cac5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2022-11-19 07:19:43,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:19:43,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:19:43,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:19:43,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:19:43,802 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:19:43,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2022-11-19 07:19:43,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/data/4ce2aa535/8ba383d17ca64c96b99767d0cce581ff/FLAG63970fc88 [2022-11-19 07:19:44,584 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:19:44,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2022-11-19 07:19:44,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/data/4ce2aa535/8ba383d17ca64c96b99767d0cce581ff/FLAG63970fc88 [2022-11-19 07:19:44,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/data/4ce2aa535/8ba383d17ca64c96b99767d0cce581ff [2022-11-19 07:19:44,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:19:44,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:19:44,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:19:44,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:19:44,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:19:44,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:19:44" (1/1) ... [2022-11-19 07:19:44,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4299c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:44, skipping insertion in model container [2022-11-19 07:19:44,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:19:44" (1/1) ... [2022-11-19 07:19:44,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:19:44,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:19:45,345 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_5aaff2a9-9b53-4bd7-b859-79271189cac5/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2022-11-19 07:19:45,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:45,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:19:45,407 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_5aaff2a9-9b53-4bd7-b859-79271189cac5/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i[30559,30572] [2022-11-19 07:19:45,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:45,446 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:19:45,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45 WrapperNode [2022-11-19 07:19:45,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:19:45,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:19:45,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:19:45,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:19:45,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,510 INFO L138 Inliner]: procedures = 170, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2022-11-19 07:19:45,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:19:45,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:19:45,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:19:45,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:19:45,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:19:45,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:19:45,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:19:45,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:19:45,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (1/1) ... [2022-11-19 07:19:45,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:19:45,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:19:45,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:19:45,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aaff2a9-9b53-4bd7-b859-79271189cac5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:19:45,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:19:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-19 07:19:45,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-19 07:19:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:19:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:19:45,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:19:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:19:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:19:45,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:19:45,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:19:45,678 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 07:19:45,876 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:19:45,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:19:46,236 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:19:46,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:19:46,476 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 07:19:46,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:19:46 BoogieIcfgContainer [2022-11-19 07:19:46,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:19:46,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:19:46,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:19:46,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:19:46,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:19:44" (1/3) ... [2022-11-19 07:19:46,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5147394e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:19:46, skipping insertion in model container [2022-11-19 07:19:46,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:45" (2/3) ... [2022-11-19 07:19:46,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5147394e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:19:46, skipping insertion in model container [2022-11-19 07:19:46,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:19:46" (3/3) ... [2022-11-19 07:19:46,492 INFO L112 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2022-11-19 07:19:46,503 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:19:46,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:19:46,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-19 07:19:46,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:19:46,612 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:19:46,654 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:19:46,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 205 flow [2022-11-19 07:19:46,677 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 205 flow [2022-11-19 07:19:46,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2022-11-19 07:19:46,741 INFO L130 PetriNetUnfolder]: 8/111 cut-off events. [2022-11-19 07:19:46,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 07:19:46,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 111 events. 8/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-11-19 07:19:46,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 1932 [2022-11-19 07:20:24,528 INFO L134 LiptonReduction]: Checked pairs total: 1950 [2022-11-19 07:20:24,528 INFO L136 LiptonReduction]: Total number of compositions: 115 [2022-11-19 07:20:24,540 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 19 transitions, 43 flow [2022-11-19 07:20:24,561 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 57 states, 44 states have (on average 2.477272727272727) internal successors, (109), 56 states have internal predecessors, (109), 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 07:20:24,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:20:24,591 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;@13f7b14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:20:24,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-19 07:20:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 44 states have (on average 2.477272727272727) internal successors, (109), 56 states have internal predecessors, (109), 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 07:20:24,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:20:24,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:24,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:20:24,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 07:20:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash 512152205, now seen corresponding path program 1 times [2022-11-19 07:20:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313080883] [2022-11-19 07:20:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:20:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:20:24,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:20:24,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313080883] [2022-11-19 07:20:24,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313080883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:24,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:20:24,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:20:24,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50938955] [2022-11-19 07:20:24,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:24,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:20:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:20:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:24,946 INFO L87 Difference]: Start difference. First operand has 57 states, 44 states have (on average 2.477272727272727) internal successors, (109), 56 states have internal predecessors, (109), 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 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:20:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:20:25,026 INFO L93 Difference]: Finished difference Result 23 states and 42 transitions. [2022-11-19 07:20:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:20:25,030 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 07:20:25,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:20:25,038 INFO L225 Difference]: With dead ends: 23 [2022-11-19 07:20:25,039 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 07:20:25,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:20:25,045 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:20:25,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:20:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 07:20:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 07:20:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 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 07:20:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2022-11-19 07:20:25,086 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 42 transitions. Word has length 5 [2022-11-19 07:20:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:20:25,086 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 42 transitions. [2022-11-19 07:20:25,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:20:25,091 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 42 transitions. [2022-11-19 07:20:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:20:25,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:20:25,093 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 07:20:25,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:20:25,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 07:20:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:20:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1303213606, now seen corresponding path program 1 times [2022-11-19 07:20:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:20:25,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599065770] [2022-11-19 07:20:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:20:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:20:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:20:25,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:20:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:20:25,175 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:20:25,179 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:20:25,182 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-19 07:20:25,185 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-11-19 07:20:25,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-11-19 07:20:25,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-11-19 07:20:25,188 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-11-19 07:20:25,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-11-19 07:20:25,190 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-11-19 07:20:25,191 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-11-19 07:20:25,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-11-19 07:20:25,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-11-19 07:20:25,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-11-19 07:20:25,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-11-19 07:20:25,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-11-19 07:20:25,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:20:25,203 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:20:25,206 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:20:25,206 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 07:20:25,288 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:20:25,301 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:20:25,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 170 transitions, 352 flow [2022-11-19 07:20:25,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 170 transitions, 352 flow [2022-11-19 07:20:25,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 170 transitions, 352 flow [2022-11-19 07:20:25,383 INFO L130 PetriNetUnfolder]: 15/194 cut-off events. [2022-11-19 07:20:25,383 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 07:20:25,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 194 events. 15/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 441 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2022-11-19 07:20:25,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 13524 [2022-11-19 07:21:16,574 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 131 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:21:40,206 INFO L134 LiptonReduction]: Checked pairs total: 27171 [2022-11-19 07:21:40,206 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-11-19 07:21:40,207 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 56 transitions, 124 flow [2022-11-19 07:21:40,357 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3011 states, 2908 states have (on average 3.083906464924347) internal successors, (8968), 3010 states have internal predecessors, (8968), 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 07:21:40,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:21:40,371 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;@13f7b14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:21:40,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-19 07:21:40,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 3011 states, 2908 states have (on average 3.083906464924347) internal successors, (8968), 3010 states have internal predecessors, (8968), 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 07:21:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:21:40,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:40,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:21:40,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:21:40,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:40,390 INFO L85 PathProgramCache]: Analyzing trace with hash -488469999, now seen corresponding path program 1 times [2022-11-19 07:21:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:40,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493728385] [2022-11-19 07:21:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:40,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:21:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:40,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:21:40,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493728385] [2022-11-19 07:21:40,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493728385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:21:40,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:21:40,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:21:40,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576858300] [2022-11-19 07:21:40,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:21:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:21:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:21:40,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:21:40,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:21:40,996 INFO L87 Difference]: Start difference. First operand has 3011 states, 2908 states have (on average 3.083906464924347) internal successors, (8968), 3010 states have internal predecessors, (8968), 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 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 07:21:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:21:42,191 INFO L93 Difference]: Finished difference Result 2316 states and 6729 transitions. [2022-11-19 07:21:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:21:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 07:21:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:21:42,234 INFO L225 Difference]: With dead ends: 2316 [2022-11-19 07:21:42,234 INFO L226 Difference]: Without dead ends: 2316 [2022-11-19 07:21:42,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:21:42,238 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 92 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:21:42,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 79 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:21:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-19 07:21:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2176. [2022-11-19 07:21:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2168 states have (on average 2.8583948339483394) internal successors, (6197), 2175 states have internal predecessors, (6197), 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 07:21:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 6197 transitions. [2022-11-19 07:21:42,386 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 6197 transitions. Word has length 10 [2022-11-19 07:21:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:21:42,386 INFO L495 AbstractCegarLoop]: Abstraction has 2176 states and 6197 transitions. [2022-11-19 07:21:42,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 07:21:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 6197 transitions. [2022-11-19 07:21:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:21:42,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:21:42,390 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:21:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:21:42,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2022-11-19 07:21:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:21:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash -588821270, now seen corresponding path program 1 times [2022-11-19 07:21:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:21:42,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211120038] [2022-11-19 07:21:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:21:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:21:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:21:42,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:21:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:21:42,462 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:21:42,462 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:21:42,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-19 07:21:42,462 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2022-11-19 07:21:42,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2022-11-19 07:21:42,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2022-11-19 07:21:42,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2022-11-19 07:21:42,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2022-11-19 07:21:42,463 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2022-11-19 07:21:42,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2022-11-19 07:21:42,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2022-11-19 07:21:42,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2022-11-19 07:21:42,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2022-11-19 07:21:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2022-11-19 07:21:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2022-11-19 07:21:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2022-11-19 07:21:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2022-11-19 07:21:42,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2022-11-19 07:21:42,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2022-11-19 07:21:42,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2022-11-19 07:21:42,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2022-11-19 07:21:42,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:21:42,467 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:21:42,467 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:21:42,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 07:21:42,525 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:21:42,531 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:21:42,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 240 transitions, 501 flow [2022-11-19 07:21:42,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 240 transitions, 501 flow [2022-11-19 07:21:42,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 240 transitions, 501 flow [2022-11-19 07:21:42,670 INFO L130 PetriNetUnfolder]: 22/277 cut-off events. [2022-11-19 07:21:42,671 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-19 07:21:42,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 277 events. 22/277 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 855 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2022-11-19 07:21:42,700 INFO L119 LiptonReduction]: Number of co-enabled transitions 34776 [2022-11-19 07:21:54,098 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 111 DAG size of output: 104 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:22:07,712 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 111 DAG size of output: 104 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:22:53,168 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 120 DAG size of output: 117 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:23:00,372 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 131 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:23:15,657 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 133 DAG size of output: 124 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:23:29,602 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:23:35,368 INFO L134 LiptonReduction]: Checked pairs total: 71358 [2022-11-19 07:23:35,369 INFO L136 LiptonReduction]: Total number of compositions: 226 [2022-11-19 07:23:35,370 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 81 transitions, 183 flow [2022-11-19 07:23:38,574 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 66407 states, 65668 states have (on average 4.1145763537796185) internal successors, (270196), 66406 states have internal predecessors, (270196), 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 07:23:38,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:23:38,576 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;@13f7b14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:23:38,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-19 07:23:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 66407 states, 65668 states have (on average 4.1145763537796185) internal successors, (270196), 66406 states have internal predecessors, (270196), 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 07:23:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:23:38,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:38,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:38,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 07:23:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash -525570862, now seen corresponding path program 1 times [2022-11-19 07:23:38,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:38,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191237004] [2022-11-19 07:23:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:38,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:23:39,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:39,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191237004] [2022-11-19 07:23:39,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191237004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:39,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:39,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:23:39,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031392872] [2022-11-19 07:23:39,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:39,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:23:39,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:23:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:23:39,423 INFO L87 Difference]: Start difference. First operand has 66407 states, 65668 states have (on average 4.1145763537796185) internal successors, (270196), 66406 states have internal predecessors, (270196), 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 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 07:23:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:41,927 INFO L93 Difference]: Finished difference Result 51782 states and 204988 transitions. [2022-11-19 07:23:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:23:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 07:23:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:42,850 INFO L225 Difference]: With dead ends: 51782 [2022-11-19 07:23:42,850 INFO L226 Difference]: Without dead ends: 51782 [2022-11-19 07:23:42,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:23:42,852 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 144 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:42,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 81 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 07:23:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51782 states. [2022-11-19 07:23:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51782 to 47680. [2022-11-19 07:23:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47680 states, 47654 states have (on average 3.8946992907206113) internal successors, (185598), 47679 states have internal predecessors, (185598), 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 07:23:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47680 states to 47680 states and 185598 transitions. [2022-11-19 07:23:45,877 INFO L78 Accepts]: Start accepts. Automaton has 47680 states and 185598 transitions. Word has length 10 [2022-11-19 07:23:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:45,878 INFO L495 AbstractCegarLoop]: Abstraction has 47680 states and 185598 transitions. [2022-11-19 07:23:45,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 07:23:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 47680 states and 185598 transitions. [2022-11-19 07:23:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:23:45,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:45,880 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 07:23:45,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:23:45,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-11-19 07:23:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1086914137, now seen corresponding path program 1 times [2022-11-19 07:23:45,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:45,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37552636] [2022-11-19 07:23:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:23:45,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:23:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:23:45,926 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:23:45,927 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:23:45,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-19 07:23:45,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-19 07:23:45,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-19 07:23:45,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-19 07:23:45,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-19 07:23:45,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-19 07:23:45,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-19 07:23:45,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-19 07:23:45,929 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-19 07:23:45,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-19 07:23:45,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-19 07:23:45,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-19 07:23:45,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-19 07:23:45,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-19 07:23:45,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-19 07:23:45,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-19 07:23:45,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-19 07:23:45,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-19 07:23:45,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-19 07:23:45,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-19 07:23:45,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-19 07:23:45,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-19 07:23:45,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-19 07:23:45,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-19 07:23:45,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-19 07:23:45,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:23:45,934 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:23:45,935 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 07:23:45,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 07:23:46,029 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 07:23:46,034 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:23:46,035 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 294 places, 310 transitions, 652 flow [2022-11-19 07:23:46,035 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 294 places, 310 transitions, 652 flow [2022-11-19 07:23:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 310 transitions, 652 flow [2022-11-19 07:23:46,142 INFO L130 PetriNetUnfolder]: 29/360 cut-off events. [2022-11-19 07:23:46,143 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-19 07:23:46,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 360 events. 29/360 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1307 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 289. Up to 10 conditions per place. [2022-11-19 07:23:46,183 INFO L119 LiptonReduction]: Number of co-enabled transitions 65688 [2022-11-19 07:25:18,460 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 120 DAG size of output: 117 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:25:40,908 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 131 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:26:06,127 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 133 DAG size of output: 124 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:26:20,074 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 131 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 07:26:23,611 INFO L134 LiptonReduction]: Checked pairs total: 139044 [2022-11-19 07:26:23,612 INFO L136 LiptonReduction]: Total number of compositions: 295 [2022-11-19 07:26:23,613 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 106 transitions, 244 flow