./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.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_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/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_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/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_74813ce5-08e1-4469-a066-b5a91214e989/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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:25:42,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:25:42,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:25:42,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:25:42,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:25:42,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:25:42,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:25:42,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:25:42,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:25:42,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:25:42,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:25:42,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:25:42,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:25:42,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:25:42,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:25:42,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:25:42,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:25:42,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:25:42,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:25:42,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:25:42,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:25:42,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:25:42,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:25:42,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:25:42,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:25:42,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:25:42,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:25:42,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:25:42,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:25:42,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:25:42,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:25:42,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:25:42,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:25:42,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:25:42,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:25:42,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:25:42,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:25:42,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:25:42,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:25:42,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:25:42,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:25:42,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 08:25:42,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:25:42,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:25:42,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:25:42,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:25:42,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:25:42,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:25:42,521 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:25:42,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:25:42,521 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:25:42,522 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:25:42,522 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:25:42,522 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:25:42,522 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:25:42,523 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:25:42,523 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:25:42,523 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:25:42,524 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:25:42,524 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:25:42,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:25:42,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:25:42,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:25:42,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:25:42,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:25:42,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:25:42,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:25:42,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:25:42,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:25:42,527 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 08:25:42,527 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:25:42,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:25:42,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:25:42,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:25:42,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:25:42,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:25:42,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:42,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:25:42,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:25:42,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:25:42,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:25:42,530 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:25:42,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:25:42,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:25:42,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:25:42,531 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_74813ce5-08e1-4469-a066-b5a91214e989/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-11-19 08:25:42,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:25:42,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:25:42,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:25:42,798 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:25:42,799 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:25:42,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-11-19 08:25:42,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/data/c0f5f4960/331d9bf31cb8477f8a55d1afeb0c5d4f/FLAG49a3cb8b9 [2022-11-19 08:25:43,422 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:25:43,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2022-11-19 08:25:43,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/data/c0f5f4960/331d9bf31cb8477f8a55d1afeb0c5d4f/FLAG49a3cb8b9 [2022-11-19 08:25:43,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/data/c0f5f4960/331d9bf31cb8477f8a55d1afeb0c5d4f [2022-11-19 08:25:43,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:25:43,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:25:43,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:43,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:25:43,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:25:43,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:43" (1/1) ... [2022-11-19 08:25:43,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e46ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:43, skipping insertion in model container [2022-11-19 08:25:43,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:25:43" (1/1) ... [2022-11-19 08:25:43,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:25:43,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:25:44,208 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_74813ce5-08e1-4469-a066-b5a91214e989/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-11-19 08:25:44,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:44,232 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:25:44,303 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_74813ce5-08e1-4469-a066-b5a91214e989/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-11-19 08:25:44,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:25:44,362 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:25:44,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44 WrapperNode [2022-11-19 08:25:44,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:25:44,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:44,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:25:44,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:25:44,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,448 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2022-11-19 08:25:44,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:25:44,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:25:44,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:25:44,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:25:44,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,494 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:25:44,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:25:44,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:25:44,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:25:44,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (1/1) ... [2022-11-19 08:25:44,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:25:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:25:44,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:25:44,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74813ce5-08e1-4469-a066-b5a91214e989/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:25:44,588 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-19 08:25:44,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-19 08:25:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:25:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:25:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:25:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:25:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:25:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:25:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:25:44,592 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:25:44,717 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:25:44,720 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:25:44,907 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:25:45,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:25:45,025 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:25:45,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:25:45 BoogieIcfgContainer [2022-11-19 08:25:45,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:25:45,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:25:45,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:25:45,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:25:45,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:25:43" (1/3) ... [2022-11-19 08:25:45,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b8c7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:25:45, skipping insertion in model container [2022-11-19 08:25:45,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:25:44" (2/3) ... [2022-11-19 08:25:45,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b8c7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:25:45, skipping insertion in model container [2022-11-19 08:25:45,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:25:45" (3/3) ... [2022-11-19 08:25:45,047 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-11-19 08:25:45,061 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 08:25:45,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:25:45,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 08:25:45,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:25:45,164 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:25:45,203 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:25:45,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 59 transitions, 123 flow [2022-11-19 08:25:45,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 59 transitions, 123 flow [2022-11-19 08:25:45,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 59 transitions, 123 flow [2022-11-19 08:25:45,290 INFO L130 PetriNetUnfolder]: 6/70 cut-off events. [2022-11-19 08:25:45,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-19 08:25:45,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 6/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 4 conditions per place. [2022-11-19 08:25:45,297 INFO L119 LiptonReduction]: Number of co-enabled transitions 840 [2022-11-19 08:25:47,864 INFO L134 LiptonReduction]: Checked pairs total: 696 [2022-11-19 08:25:47,865 INFO L136 LiptonReduction]: Total number of compositions: 60 [2022-11-19 08:25:47,874 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 11 transitions, 27 flow [2022-11-19 08:25:47,886 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:47,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:25:47,919 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;@51784762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:25:47,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-19 08:25:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:25:47,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:47,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:25:47,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:25:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash 10571590, now seen corresponding path program 1 times [2022-11-19 08:25:47,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:47,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804703745] [2022-11-19 08:25:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:25:48,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:48,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804703745] [2022-11-19 08:25:48,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804703745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:48,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:48,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:25:48,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336241519] [2022-11-19 08:25:48,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:48,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:25:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:48,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:25:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:25:48,231 INFO L87 Difference]: Start difference. First operand has 32 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 31 states have internal predecessors, (50), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:48,270 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-11-19 08:25:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:25:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 08:25:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:48,280 INFO L225 Difference]: With dead ends: 11 [2022-11-19 08:25:48,280 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 08:25:48,281 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 08:25:48,287 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:48,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:25:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 08:25:48,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-19 08:25:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-19 08:25:48,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2022-11-19 08:25:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:48,318 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-19 08:25:48,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-19 08:25:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:25:48,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:48,319 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-19 08:25:48,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:25:48,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2022-11-19 08:25:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1569336343, now seen corresponding path program 1 times [2022-11-19 08:25:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:48,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037343474] [2022-11-19 08:25:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:25:48,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:25:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:25:48,405 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:25:48,406 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:25:48,410 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-11-19 08:25:48,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-11-19 08:25:48,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-11-19 08:25:48,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-11-19 08:25:48,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-11-19 08:25:48,415 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-11-19 08:25:48,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-11-19 08:25:48,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-11-19 08:25:48,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-11-19 08:25:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:25:48,429 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:25:48,432 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:25:48,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-19 08:25:48,468 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:25:48,471 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:25:48,471 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 192 flow [2022-11-19 08:25:48,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 192 flow [2022-11-19 08:25:48,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2022-11-19 08:25:48,501 INFO L130 PetriNetUnfolder]: 11/114 cut-off events. [2022-11-19 08:25:48,501 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 08:25:48,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 114 events. 11/114 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 210 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2022-11-19 08:25:48,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 3540 [2022-11-19 08:25:51,410 INFO L134 LiptonReduction]: Checked pairs total: 3320 [2022-11-19 08:25:51,410 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-11-19 08:25:51,412 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 20 transitions, 52 flow [2022-11-19 08:25:51,467 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 330 states, 274 states have (on average 2.9635036496350367) internal successors, (812), 329 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:51,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:25:51,472 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;@51784762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:25:51,474 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-19 08:25:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 274 states have (on average 2.9635036496350367) internal successors, (812), 329 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:25:51,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:51,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:25:51,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2022-11-19 08:25:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:51,479 INFO L85 PathProgramCache]: Analyzing trace with hash 17025699, now seen corresponding path program 1 times [2022-11-19 08:25:51,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:51,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330648047] [2022-11-19 08:25:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:51,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:25:51,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:51,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330648047] [2022-11-19 08:25:51,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330648047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:51,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:51,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:25:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779244048] [2022-11-19 08:25:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:25:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:25:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:25:51,563 INFO L87 Difference]: Start difference. First operand has 330 states, 274 states have (on average 2.9635036496350367) internal successors, (812), 329 states have internal predecessors, (812), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:51,585 INFO L93 Difference]: Finished difference Result 60 states and 119 transitions. [2022-11-19 08:25:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:25:51,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 08:25:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:51,589 INFO L225 Difference]: With dead ends: 60 [2022-11-19 08:25:51,590 INFO L226 Difference]: Without dead ends: 60 [2022-11-19 08:25:51,590 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 08:25:51,592 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:51,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:25:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-19 08:25:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-19 08:25:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.016949152542373) internal successors, (119), 59 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2022-11-19 08:25:51,616 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 4 [2022-11-19 08:25:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:51,617 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2022-11-19 08:25:51,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2022-11-19 08:25:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:25:51,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:51,621 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:25:51,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:25:51,621 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 08:25:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1103138793, now seen corresponding path program 1 times [2022-11-19 08:25:51,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:51,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552581720] [2022-11-19 08:25:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:51,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:25:51,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:25:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:25:51,673 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:25:51,674 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:25:51,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-19 08:25:51,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2022-11-19 08:25:51,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2022-11-19 08:25:51,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2022-11-19 08:25:51,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2022-11-19 08:25:51,679 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2022-11-19 08:25:51,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2022-11-19 08:25:51,680 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2022-11-19 08:25:51,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2022-11-19 08:25:51,682 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2022-11-19 08:25:51,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2022-11-19 08:25:51,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2022-11-19 08:25:51,683 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2022-11-19 08:25:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:25:51,684 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:25:51,684 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:25:51,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-19 08:25:51,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:25:51,727 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:25:51,727 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 121 transitions, 263 flow [2022-11-19 08:25:51,727 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 121 transitions, 263 flow [2022-11-19 08:25:51,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 121 transitions, 263 flow [2022-11-19 08:25:51,790 INFO L130 PetriNetUnfolder]: 16/158 cut-off events. [2022-11-19 08:25:51,790 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-19 08:25:51,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 158 events. 16/158 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 378 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 118. Up to 8 conditions per place. [2022-11-19 08:25:51,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 8100 [2022-11-19 08:25:56,410 INFO L134 LiptonReduction]: Checked pairs total: 8012 [2022-11-19 08:25:56,411 INFO L136 LiptonReduction]: Total number of compositions: 132 [2022-11-19 08:25:56,414 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 27 transitions, 75 flow [2022-11-19 08:25:56,511 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2338 states, 2055 states have (on average 3.762043795620438) internal successors, (7731), 2337 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:56,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:25:56,515 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;@51784762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:25:56,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-19 08:25:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 2338 states, 2055 states have (on average 3.762043795620438) internal successors, (7731), 2337 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:25:56,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:56,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:25:56,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-19 08:25:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash 25653693, now seen corresponding path program 1 times [2022-11-19 08:25:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500056405] [2022-11-19 08:25:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:25:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:25:56,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:25:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500056405] [2022-11-19 08:25:56,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500056405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:25:56,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:25:56,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:25:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480734458] [2022-11-19 08:25:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:25:56,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:25:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:25:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:25:56,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:25:56,586 INFO L87 Difference]: Start difference. First operand has 2338 states, 2055 states have (on average 3.762043795620438) internal successors, (7731), 2337 states have internal predecessors, (7731), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:25:56,615 INFO L93 Difference]: Finished difference Result 186 states and 485 transitions. [2022-11-19 08:25:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:25:56,615 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 08:25:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:25:56,619 INFO L225 Difference]: With dead ends: 186 [2022-11-19 08:25:56,620 INFO L226 Difference]: Without dead ends: 186 [2022-11-19 08:25:56,620 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 08:25:56,621 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:25:56,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:25:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-19 08:25:56,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-19 08:25:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.6216216216216215) internal successors, (485), 185 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2022-11-19 08:25:56,644 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 4 [2022-11-19 08:25:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:25:56,645 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2022-11-19 08:25:56,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:25:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2022-11-19 08:25:56,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:25:56,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:25:56,654 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-19 08:25:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:25:56,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2022-11-19 08:25:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:25:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash -62129131, now seen corresponding path program 1 times [2022-11-19 08:25:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:25:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566580641] [2022-11-19 08:25:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:25:56,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:25:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:25:56,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:25:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:25:56,709 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:25:56,717 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:25:56,717 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-19 08:25:56,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-19 08:25:56,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-19 08:25:56,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-19 08:25:56,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-19 08:25:56,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-19 08:25:56,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-19 08:25:56,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-19 08:25:56,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-19 08:25:56,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-19 08:25:56,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-19 08:25:56,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-19 08:25:56,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-19 08:25:56,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-19 08:25:56,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-19 08:25:56,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-19 08:25:56,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-19 08:25:56,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:25:56,721 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:25:56,721 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:25:56,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-19 08:25:56,743 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:25:56,745 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:25:56,745 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 152 transitions, 336 flow [2022-11-19 08:25:56,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 152 transitions, 336 flow [2022-11-19 08:25:56,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 152 transitions, 336 flow [2022-11-19 08:25:56,780 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2022-11-19 08:25:56,780 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-19 08:25:56,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 538 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 166. Up to 10 conditions per place. [2022-11-19 08:25:56,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 14520 [2022-11-19 08:26:02,210 INFO L134 LiptonReduction]: Checked pairs total: 15137 [2022-11-19 08:26:02,210 INFO L136 LiptonReduction]: Total number of compositions: 178 [2022-11-19 08:26:02,211 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 34 transitions, 100 flow [2022-11-19 08:26:02,792 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 16400 states, 14989 states have (on average 4.552738675028354) internal successors, (68241), 16399 states have internal predecessors, (68241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:02,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:26:02,795 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;@51784762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:26:02,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-19 08:26:02,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 16400 states, 14989 states have (on average 4.552738675028354) internal successors, (68241), 16399 states have internal predecessors, (68241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:26:02,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:02,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:26:02,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 08:26:02,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash 36682635, now seen corresponding path program 1 times [2022-11-19 08:26:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:02,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718316566] [2022-11-19 08:26:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:26:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:26:02,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:26:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718316566] [2022-11-19 08:26:02,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718316566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:26:02,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:26:02,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:26:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267315037] [2022-11-19 08:26:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:26:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:26:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:26:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:26:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:26:02,920 INFO L87 Difference]: Start difference. First operand has 16400 states, 14989 states have (on average 4.552738675028354) internal successors, (68241), 16399 states have internal predecessors, (68241), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:26:03,064 INFO L93 Difference]: Finished difference Result 564 states and 1835 transitions. [2022-11-19 08:26:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:26:03,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 08:26:03,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:26:03,074 INFO L225 Difference]: With dead ends: 564 [2022-11-19 08:26:03,074 INFO L226 Difference]: Without dead ends: 564 [2022-11-19 08:26:03,075 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 08:26:03,075 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:26:03,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:26:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-19 08:26:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2022-11-19 08:26:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 3.2593250444049735) internal successors, (1835), 563 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1835 transitions. [2022-11-19 08:26:03,131 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1835 transitions. Word has length 4 [2022-11-19 08:26:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:26:03,131 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 1835 transitions. [2022-11-19 08:26:03,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1835 transitions. [2022-11-19 08:26:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 08:26:03,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:03,142 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-19 08:26:03,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:26:03,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2022-11-19 08:26:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash 319712714, now seen corresponding path program 1 times [2022-11-19 08:26:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:03,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699834989] [2022-11-19 08:26:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:26:03,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:26:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:26:03,204 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:26:03,204 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:26:03,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-19 08:26:03,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2022-11-19 08:26:03,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2022-11-19 08:26:03,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2022-11-19 08:26:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2022-11-19 08:26:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2022-11-19 08:26:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2022-11-19 08:26:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2022-11-19 08:26:03,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2022-11-19 08:26:03,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2022-11-19 08:26:03,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2022-11-19 08:26:03,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2022-11-19 08:26:03,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2022-11-19 08:26:03,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2022-11-19 08:26:03,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2022-11-19 08:26:03,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2022-11-19 08:26:03,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2022-11-19 08:26:03,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2022-11-19 08:26:03,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2022-11-19 08:26:03,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2022-11-19 08:26:03,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2022-11-19 08:26:03,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:26:03,209 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:26:03,210 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:26:03,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-19 08:26:03,249 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:26:03,251 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:26:03,251 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 183 transitions, 411 flow [2022-11-19 08:26:03,252 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 183 transitions, 411 flow [2022-11-19 08:26:03,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 411 flow [2022-11-19 08:26:03,308 INFO L130 PetriNetUnfolder]: 26/246 cut-off events. [2022-11-19 08:26:03,309 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-19 08:26:03,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 246 events. 26/246 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 702 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 215. Up to 12 conditions per place. [2022-11-19 08:26:03,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 22800 [2022-11-19 08:26:09,142 INFO L134 LiptonReduction]: Checked pairs total: 22492 [2022-11-19 08:26:09,142 INFO L136 LiptonReduction]: Total number of compositions: 201 [2022-11-19 08:26:09,143 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 41 transitions, 127 flow [2022-11-19 08:26:13,640 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114840 states, 107800 states have (on average 5.345250463821892) internal successors, (576218), 114839 states have internal predecessors, (576218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:13,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:26:13,656 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;@51784762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:26:13,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-19 08:26:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 114840 states, 107800 states have (on average 5.345250463821892) internal successors, (576218), 114839 states have internal predecessors, (576218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:26:13,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:13,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:26:13,851 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 08:26:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash 49550433, now seen corresponding path program 1 times [2022-11-19 08:26:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:13,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068024175] [2022-11-19 08:26:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:26:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:26:13,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:26:13,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068024175] [2022-11-19 08:26:13,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068024175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:26:13,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:26:13,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:26:13,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234159355] [2022-11-19 08:26:13,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:26:13,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:26:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:26:13,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:26:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:26:14,078 INFO L87 Difference]: Start difference. First operand has 114840 states, 107800 states have (on average 5.345250463821892) internal successors, (576218), 114839 states have internal predecessors, (576218), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:26:14,167 INFO L93 Difference]: Finished difference Result 1698 states and 6641 transitions. [2022-11-19 08:26:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:26:14,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-19 08:26:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:26:14,188 INFO L225 Difference]: With dead ends: 1698 [2022-11-19 08:26:14,188 INFO L226 Difference]: Without dead ends: 1698 [2022-11-19 08:26:14,188 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 08:26:14,191 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:26:14,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:26:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-11-19 08:26:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2022-11-19 08:26:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 3.9133765468473776) internal successors, (6641), 1697 states have internal predecessors, (6641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 6641 transitions. [2022-11-19 08:26:14,272 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 6641 transitions. Word has length 4 [2022-11-19 08:26:14,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:26:14,272 INFO L495 AbstractCegarLoop]: Abstraction has 1698 states and 6641 transitions. [2022-11-19 08:26:14,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 6641 transitions. [2022-11-19 08:26:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:26:14,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:14,275 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:26:14,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:26:14,276 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 08:26:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash -477906289, now seen corresponding path program 1 times [2022-11-19 08:26:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752572121] [2022-11-19 08:26:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:26:14,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:26:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:26:14,341 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:26:14,344 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:26:14,345 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-19 08:26:14,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-11-19 08:26:14,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-11-19 08:26:14,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-11-19 08:26:14,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-11-19 08:26:14,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-11-19 08:26:14,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-11-19 08:26:14,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-11-19 08:26:14,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-11-19 08:26:14,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-11-19 08:26:14,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-11-19 08:26:14,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-11-19 08:26:14,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-11-19 08:26:14,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-11-19 08:26:14,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-11-19 08:26:14,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-11-19 08:26:14,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2022-11-19 08:26:14,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2022-11-19 08:26:14,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-11-19 08:26:14,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-11-19 08:26:14,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-11-19 08:26:14,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-11-19 08:26:14,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-11-19 08:26:14,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-11-19 08:26:14,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-11-19 08:26:14,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:26:14,353 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:26:14,354 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-19 08:26:14,354 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-11-19 08:26:14,384 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-19 08:26:14,387 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:26:14,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 214 transitions, 488 flow [2022-11-19 08:26:14,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 214 transitions, 488 flow [2022-11-19 08:26:14,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 214 transitions, 488 flow [2022-11-19 08:26:14,615 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-11-19 08:26:14,629 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-19 08:26:14,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 290 events. 31/290 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 843 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 265. Up to 14 conditions per place. [2022-11-19 08:26:14,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 32940 [2022-11-19 08:26:21,553 INFO L134 LiptonReduction]: Checked pairs total: 33688 [2022-11-19 08:26:21,553 INFO L136 LiptonReduction]: Total number of compositions: 249 [2022-11-19 08:26:21,554 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 48 transitions, 156 flow [2022-11-19 08:26:57,184 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 803926 states, 768756 states have (on average 6.143351076284283) internal successors, (4722738), 803925 states have internal predecessors, (4722738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:57,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:26:57,186 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;@51784762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:26:57,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-19 08:26:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 803926 states, 768756 states have (on average 6.143351076284283) internal successors, (4722738), 803925 states have internal predecessors, (4722738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:26:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:26:58,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:26:58,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:26:58,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-19 08:26:58,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:26:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash 64491012, now seen corresponding path program 1 times [2022-11-19 08:26:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:26:58,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052645838] [2022-11-19 08:26:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:26:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:26:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:26:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:26:58,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:26:58,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052645838] [2022-11-19 08:26:58,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052645838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:26:58,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:26:58,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:26:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80693819] [2022-11-19 08:26:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:26:58,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:26:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:26:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:26:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2