./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6e486078d0e4f6917a17aab835fe79b1b8a7d5ba88405bc862812316ae6c56b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:55,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:55,477 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 08:03:55,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:55,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:55,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:55,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:55,511 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:55,512 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:55,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:55,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:55,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:55,514 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:55,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:55,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:55,516 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:55,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:55,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:55,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:55,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:55,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:55,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:55,521 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 08:03:55,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:55,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:55,523 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:55,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:55,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:55,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:55,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:55,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:55,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:55,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:55,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:55,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:55,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:55,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:55,528 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:55,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:55,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:55,529 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:55,529 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6e486078d0e4f6917a17aab835fe79b1b8a7d5ba88405bc862812316ae6c56b [2023-11-19 08:03:55,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:55,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:55,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:55,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:55,891 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:55,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-2.i [2023-11-19 08:03:59,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:59,511 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:59,512 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-2.i [2023-11-19 08:03:59,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/data/cce47fc85/96ce260a820f41ffb78c2acd6ae1a803/FLAG6331c4f08 [2023-11-19 08:03:59,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/data/cce47fc85/96ce260a820f41ffb78c2acd6ae1a803 [2023-11-19 08:03:59,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:59,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:59,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:59,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:59,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:59,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:59" (1/1) ... [2023-11-19 08:03:59,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f42d24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:59, skipping insertion in model container [2023-11-19 08:03:59,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:59" (1/1) ... [2023-11-19 08:03:59,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:00,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:00,053 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:00,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:00,199 WARN L675 CHandler]: The function pthread_detach is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:00,209 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:00,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00 WrapperNode [2023-11-19 08:04:00,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:00,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:00,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:00,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:00,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,272 INFO L138 Inliner]: procedures = 159, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-11-19 08:04:00,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:00,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:00,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:00,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:00,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:00,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:00,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:00,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:00,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:00,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:00,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:00,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eeee195-5319-4988-b961-2b134dadcc63/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:04:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:04:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 08:04:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure pthread_detach [2023-11-19 08:04:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 08:04:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 08:04:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:00,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:00,413 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:04:00,574 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:00,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:00,960 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:00,971 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:00,972 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 08:04:00,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:00 BoogieIcfgContainer [2023-11-19 08:04:00,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:00,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:00,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:00,986 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:00,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:59" (1/3) ... [2023-11-19 08:04:00,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51651bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:00, skipping insertion in model container [2023-11-19 08:04:00,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00" (2/3) ... [2023-11-19 08:04:00,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51651bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:00, skipping insertion in model container [2023-11-19 08:04:00,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:00" (3/3) ... [2023-11-19 08:04:00,990 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-counter-inner-2.i [2023-11-19 08:04:01,005 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:04:01,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:01,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-19 08:04:01,018 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:04:01,129 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:04:01,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 298 flow [2023-11-19 08:04:01,267 INFO L124 PetriNetUnfolderBase]: 11/186 cut-off events. [2023-11-19 08:04:01,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:01,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 186 events. 11/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 322 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 08:04:01,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 147 transitions, 298 flow [2023-11-19 08:04:01,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 147 transitions, 298 flow [2023-11-19 08:04:01,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:01,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 147 transitions, 298 flow [2023-11-19 08:04:01,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 147 transitions, 298 flow [2023-11-19 08:04:01,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 298 flow [2023-11-19 08:04:01,368 INFO L124 PetriNetUnfolderBase]: 11/186 cut-off events. [2023-11-19 08:04:01,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:01,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 186 events. 11/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 322 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-11-19 08:04:01,378 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-11-19 08:04:05,154 INFO L134 LiptonReduction]: Checked pairs total: 20043 [2023-11-19 08:04:05,155 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-11-19 08:04:05,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:05,188 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@206875f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:05,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-19 08:04:05,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:05,201 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:04:05,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:05,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:05,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:04:05,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 08:04:05,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash 15419912, now seen corresponding path program 1 times [2023-11-19 08:04:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:05,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546470808] [2023-11-19 08:04:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:05,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546470808] [2023-11-19 08:04:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546470808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:05,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:05,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:05,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390679201] [2023-11-19 08:04:05,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:05,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 250 [2023-11-19 08:04:05,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2023-11-19 08:04:05,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:05,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 250 [2023-11-19 08:04:05,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:05,942 INFO L124 PetriNetUnfolderBase]: 273/767 cut-off events. [2023-11-19 08:04:05,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:05,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 767 events. 273/767 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4289 event pairs, 74 based on Foata normal form. 0/676 useless extension candidates. Maximal degree in co-relation 1279. Up to 329 conditions per place. [2023-11-19 08:04:05,953 INFO L140 encePairwiseOnDemand]: 235/250 looper letters, 45 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-11-19 08:04:05,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 252 flow [2023-11-19 08:04:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-19 08:04:05,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596 [2023-11-19 08:04:05,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-19 08:04:05,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-19 08:04:05,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:05,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-19 08:04:05,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2023-11-19 08:04:05,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-11-19 08:04:05,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 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) [2023-11-19 08:04:05,998 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 112 flow. Second operand 3 states and 447 transitions. [2023-11-19 08:04:06,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 252 flow [2023-11-19 08:04:06,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:06,006 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 162 flow [2023-11-19 08:04:06,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2023-11-19 08:04:06,012 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-19 08:04:06,013 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 162 flow [2023-11-19 08:04:06,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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) [2023-11-19 08:04:06,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:06,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 08:04:06,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:06,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-11-19 08:04:06,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:06,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1948146655, now seen corresponding path program 1 times [2023-11-19 08:04:06,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:06,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645580053] [2023-11-19 08:04:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:06,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:06,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:06,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:06,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:04:06,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-19 08:04:06,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-11-19 08:04:06,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-11-19 08:04:06,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-11-19 08:04:06,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-11-19 08:04:06,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-11-19 08:04:06,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-11-19 08:04:06,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-11-19 08:04:06,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-11-19 08:04:06,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-11-19 08:04:06,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-11-19 08:04:06,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-11-19 08:04:06,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-11-19 08:04:06,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-11-19 08:04:06,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-11-19 08:04:06,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:04:06,148 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 08:04:06,152 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:04:06,152 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 08:04:06,188 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:04:06,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 392 flow [2023-11-19 08:04:06,249 INFO L124 PetriNetUnfolderBase]: 16/287 cut-off events. [2023-11-19 08:04:06,249 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:04:06,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 287 events. 16/287 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 645 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2023-11-19 08:04:06,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 191 transitions, 392 flow [2023-11-19 08:04:06,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 191 transitions, 392 flow [2023-11-19 08:04:06,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:06,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 191 transitions, 392 flow [2023-11-19 08:04:06,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 191 transitions, 392 flow [2023-11-19 08:04:06,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 392 flow [2023-11-19 08:04:06,313 INFO L124 PetriNetUnfolderBase]: 16/287 cut-off events. [2023-11-19 08:04:06,313 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:04:06,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 287 events. 16/287 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 645 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2023-11-19 08:04:06,329 INFO L119 LiptonReduction]: Number of co-enabled transitions 13760 [2023-11-19 08:04:09,831 INFO L134 LiptonReduction]: Checked pairs total: 70850 [2023-11-19 08:04:09,831 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-11-19 08:04:09,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:09,835 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@206875f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:09,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-19 08:04:09,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:09,838 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:04:09,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:09,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:09,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:04:09,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-19 08:04:09,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:09,839 INFO L85 PathProgramCache]: Analyzing trace with hash 26283815, now seen corresponding path program 1 times [2023-11-19 08:04:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:09,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432697734] [2023-11-19 08:04:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:09,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:09,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432697734] [2023-11-19 08:04:09,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432697734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:09,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:09,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:09,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608822878] [2023-11-19 08:04:09,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:09,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:09,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:09,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 309 [2023-11-19 08:04:09,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-11-19 08:04:09,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:09,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 309 [2023-11-19 08:04:09,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:13,302 INFO L124 PetriNetUnfolderBase]: 13028/24960 cut-off events. [2023-11-19 08:04:13,302 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-11-19 08:04:13,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45155 conditions, 24960 events. 13028/24960 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 216886 event pairs, 4551 based on Foata normal form. 0/22472 useless extension candidates. Maximal degree in co-relation 26984. Up to 11130 conditions per place. [2023-11-19 08:04:13,523 INFO L140 encePairwiseOnDemand]: 284/309 looper letters, 82 selfloop transitions, 16 changer transitions 0/126 dead transitions. [2023-11-19 08:04:13,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 463 flow [2023-11-19 08:04:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-11-19 08:04:13,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461704422869471 [2023-11-19 08:04:13,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-11-19 08:04:13,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-11-19 08:04:13,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:13,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-11-19 08:04:13,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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) [2023-11-19 08:04:13,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-11-19 08:04:13,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-11-19 08:04:13,542 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 178 flow. Second operand 3 states and 599 transitions. [2023-11-19 08:04:13,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 463 flow [2023-11-19 08:04:13,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:04:13,550 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 312 flow [2023-11-19 08:04:13,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2023-11-19 08:04:13,552 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-11-19 08:04:13,552 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 312 flow [2023-11-19 08:04:13,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-11-19 08:04:13,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:13,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:04:13,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-19 08:04:13,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1764744651, now seen corresponding path program 1 times [2023-11-19 08:04:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:13,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061132168] [2023-11-19 08:04:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:13,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061132168] [2023-11-19 08:04:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061132168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:13,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:13,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558783486] [2023-11-19 08:04:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:13,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:13,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:13,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 309 [2023-11-19 08:04:13,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-19 08:04:13,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:13,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 309 [2023-11-19 08:04:13,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:16,630 INFO L124 PetriNetUnfolderBase]: 11058/21609 cut-off events. [2023-11-19 08:04:16,630 INFO L125 PetriNetUnfolderBase]: For 8185/8616 co-relation queries the response was YES. [2023-11-19 08:04:16,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46973 conditions, 21609 events. 11058/21609 cut-off events. For 8185/8616 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 191911 event pairs, 6148 based on Foata normal form. 68/19201 useless extension candidates. Maximal degree in co-relation 28998. Up to 14878 conditions per place. [2023-11-19 08:04:16,799 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 67 selfloop transitions, 16 changer transitions 0/128 dead transitions. [2023-11-19 08:04:16,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 128 transitions, 581 flow [2023-11-19 08:04:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-11-19 08:04:16,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6267529665587918 [2023-11-19 08:04:16,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-11-19 08:04:16,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-11-19 08:04:16,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:16,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-11-19 08:04:16,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 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) [2023-11-19 08:04:16,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-11-19 08:04:16,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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) [2023-11-19 08:04:16,810 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 312 flow. Second operand 3 states and 581 transitions. [2023-11-19 08:04:16,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 128 transitions, 581 flow [2023-11-19 08:04:16,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 537 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:04:16,844 INFO L231 Difference]: Finished difference. Result has 90 places, 111 transitions, 426 flow [2023-11-19 08:04:16,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=90, PETRI_TRANSITIONS=111} [2023-11-19 08:04:16,847 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 5 predicate places. [2023-11-19 08:04:16,848 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 111 transitions, 426 flow [2023-11-19 08:04:16,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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) [2023-11-19 08:04:16,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:16,849 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 08:04:16,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:04:16,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-11-19 08:04:16,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash -657634097, now seen corresponding path program 1 times [2023-11-19 08:04:16,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:16,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594821385] [2023-11-19 08:04:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:16,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:16,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:16,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:04:16,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-11-19 08:04:16,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-11-19 08:04:16,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-11-19 08:04:16,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-11-19 08:04:16,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-11-19 08:04:16,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-11-19 08:04:16,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-11-19 08:04:16,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-11-19 08:04:16,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-11-19 08:04:16,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-11-19 08:04:16,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-11-19 08:04:16,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-11-19 08:04:16,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-11-19 08:04:16,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-11-19 08:04:16,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-11-19 08:04:16,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-11-19 08:04:16,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-11-19 08:04:16,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-11-19 08:04:16,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-11-19 08:04:16,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-11-19 08:04:16,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:04:16,998 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 08:04:16,999 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 08:04:16,999 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 08:04:17,047 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:04:17,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 235 transitions, 488 flow [2023-11-19 08:04:17,141 INFO L124 PetriNetUnfolderBase]: 21/388 cut-off events. [2023-11-19 08:04:17,142 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:04:17,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 388 events. 21/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 947 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 291. Up to 8 conditions per place. [2023-11-19 08:04:17,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 235 transitions, 488 flow [2023-11-19 08:04:17,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 235 transitions, 488 flow [2023-11-19 08:04:17,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:04:17,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 235 transitions, 488 flow [2023-11-19 08:04:17,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 235 transitions, 488 flow [2023-11-19 08:04:17,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 235 transitions, 488 flow [2023-11-19 08:04:17,222 INFO L124 PetriNetUnfolderBase]: 21/388 cut-off events. [2023-11-19 08:04:17,222 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 08:04:17,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 388 events. 21/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 947 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 291. Up to 8 conditions per place. [2023-11-19 08:04:17,248 INFO L119 LiptonReduction]: Number of co-enabled transitions 26316 [2023-11-19 08:04:21,437 INFO L134 LiptonReduction]: Checked pairs total: 138602 [2023-11-19 08:04:21,438 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-19 08:04:21,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:21,442 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@206875f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:21,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-19 08:04:21,445 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:04:21,445 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 08:04:21,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:04:21,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:21,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 08:04:21,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-11-19 08:04:21,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:21,447 INFO L85 PathProgramCache]: Analyzing trace with hash 38965896, now seen corresponding path program 1 times [2023-11-19 08:04:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132678499] [2023-11-19 08:04:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:21,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:21,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132678499] [2023-11-19 08:04:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132678499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:21,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65117805] [2023-11-19 08:04:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:21,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:21,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:21,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 368 [2023-11-19 08:04:21,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2023-11-19 08:04:21,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:21,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 368 [2023-11-19 08:04:21,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand