./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12-pthread.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_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/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_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/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_f5ade8f1-5bb5-42e6-8565-11611bf6d412/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 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:19,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:20,016 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:44:20,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:20,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:20,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:20,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:20,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:20,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:20,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:20,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:20,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:20,055 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:20,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:20,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:20,057 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:20,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:20,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:20,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:20,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:20,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:20,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:20,062 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:44:20,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:44:20,064 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:20,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:20,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:20,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:20,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:20,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:20,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:20,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:20,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:20,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:20,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:20,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:20,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:20,070 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:20,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:20,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:20,071 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:20,072 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_f5ade8f1-5bb5-42e6-8565-11611bf6d412/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94001a9ab0492f7774a7e81f183179cf0060947b701e48f51b2989eec22ae051 [2023-11-19 07:44:20,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:20,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:20,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:20,442 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:20,443 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:20,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-lit/sssc12-pthread.i [2023-11-19 07:44:23,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:24,174 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:24,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/sv-benchmarks/c/pthread-lit/sssc12-pthread.i [2023-11-19 07:44:24,206 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/data/88f6ebaf0/586182f4fa1a4d88abc0abd9eec7bf47/FLAGd04836d6c [2023-11-19 07:44:24,229 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/data/88f6ebaf0/586182f4fa1a4d88abc0abd9eec7bf47 [2023-11-19 07:44:24,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:24,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:24,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:24,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:24,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:24,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:24" (1/1) ... [2023-11-19 07:44:24,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6480010b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:24, skipping insertion in model container [2023-11-19 07:44:24,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:24" (1/1) ... [2023-11-19 07:44:24,335 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:24,822 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:44:25,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:25,056 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:25,113 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:44:25,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:25,305 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:25,316 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:25,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25 WrapperNode [2023-11-19 07:44:25,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:25,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:25,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:25,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:25,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,434 INFO L138 Inliner]: procedures = 273, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2023-11-19 07:44:25,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:25,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:25,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:25,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:25,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:25,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:25,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:25,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:25,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (1/1) ... [2023-11-19 07:44:25,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:25,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:25,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:25,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5ade8f1-5bb5-42e6-8565-11611bf6d412/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-19 07:44:25,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-19 07:44:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:44:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:44:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:44:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:25,587 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 07:44:25,795 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:25,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:44:26,063 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:44:26,075 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:44:26,076 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:44:26,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:26 BoogieIcfgContainer [2023-11-19 07:44:26,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:44:26,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:44:26,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:44:26,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:44:26,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:24" (1/3) ... [2023-11-19 07:44:26,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27921e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:26, skipping insertion in model container [2023-11-19 07:44:26,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:25" (2/3) ... [2023-11-19 07:44:26,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27921e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:44:26, skipping insertion in model container [2023-11-19 07:44:26,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:44:26" (3/3) ... [2023-11-19 07:44:26,105 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-pthread.i [2023-11-19 07:44:26,126 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:44:26,140 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:44:26,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-19 07:44:26,142 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:44:26,306 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:26,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 150 transitions, 304 flow [2023-11-19 07:44:26,492 INFO L124 PetriNetUnfolderBase]: 10/162 cut-off events. [2023-11-19 07:44:26,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:26,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 10/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-11-19 07:44:26,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 150 transitions, 304 flow [2023-11-19 07:44:26,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 150 transitions, 304 flow [2023-11-19 07:44:26,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:26,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 150 transitions, 304 flow [2023-11-19 07:44:26,544 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 150 transitions, 304 flow [2023-11-19 07:44:26,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 150 transitions, 304 flow [2023-11-19 07:44:26,607 INFO L124 PetriNetUnfolderBase]: 10/162 cut-off events. [2023-11-19 07:44:26,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:26,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 10/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 174 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-11-19 07:44:26,612 INFO L119 LiptonReduction]: Number of co-enabled transitions 2100 [2023-11-19 07:44:33,000 INFO L134 LiptonReduction]: Checked pairs total: 2300 [2023-11-19 07:44:33,000 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-11-19 07:44:33,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:33,024 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;@1e2ad85d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:33,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-19 07:44:33,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:33,026 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:44:33,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:33,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:33,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:44:33,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:44:33,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:33,034 INFO L85 PathProgramCache]: Analyzing trace with hash 621, now seen corresponding path program 1 times [2023-11-19 07:44:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:33,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762789550] [2023-11-19 07:44:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:33,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:33,154 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 07:44:33,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:33,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762789550] [2023-11-19 07:44:33,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762789550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:33,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:33,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:44:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76214155] [2023-11-19 07:44:33,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:33,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:44:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:44:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:44:33,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 348 [2023-11-19 07:44:33,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 50 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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 07:44:33,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:33,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 348 [2023-11-19 07:44:33,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:33,242 INFO L124 PetriNetUnfolderBase]: 7/20 cut-off events. [2023-11-19 07:44:33,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:33,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 20 events. 7/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 4 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-11-19 07:44:33,244 INFO L140 encePairwiseOnDemand]: 333/348 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2023-11-19 07:44:33,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 34 flow [2023-11-19 07:44:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:44:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:44:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 306 transitions. [2023-11-19 07:44:33,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2023-11-19 07:44:33,262 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 306 transitions. [2023-11-19 07:44:33,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 306 transitions. [2023-11-19 07:44:33,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:33,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 306 transitions. [2023-11-19 07:44:33,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 153.0) internal successors, (306), 2 states have internal predecessors, (306), 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 07:44:33,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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 07:44:33,280 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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 07:44:33,282 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 50 flow. Second operand 2 states and 306 transitions. [2023-11-19 07:44:33,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 34 flow [2023-11-19 07:44:33,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:33,286 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 20 flow [2023-11-19 07:44:33,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2023-11-19 07:44:33,292 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -14 predicate places. [2023-11-19 07:44:33,293 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 20 flow [2023-11-19 07:44:33,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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 07:44:33,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:33,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:44:33,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:44:33,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-19 07:44:33,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:33,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1774366308, now seen corresponding path program 1 times [2023-11-19 07:44:33,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365384011] [2023-11-19 07:44:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:33,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:44:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:33,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:44:33,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:44:33,413 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-11-19 07:44:33,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-11-19 07:44:33,416 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-11-19 07:44:33,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-11-19 07:44:33,417 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-11-19 07:44:33,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-11-19 07:44:33,418 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-11-19 07:44:33,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-11-19 07:44:33,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-11-19 07:44:33,419 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-11-19 07:44:33,420 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-11-19 07:44:33,421 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-11-19 07:44:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-11-19 07:44:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-11-19 07:44:33,422 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-11-19 07:44:33,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-11-19 07:44:33,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-11-19 07:44:33,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-11-19 07:44:33,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-11-19 07:44:33,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-11-19 07:44:33,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-11-19 07:44:33,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-11-19 07:44:33,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-11-19 07:44:33,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:44:33,432 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 07:44:33,435 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:44:33,436 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:44:33,487 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 221 transitions, 452 flow [2023-11-19 07:44:33,554 INFO L124 PetriNetUnfolderBase]: 17/247 cut-off events. [2023-11-19 07:44:33,554 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:44:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 17/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 573 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-19 07:44:33,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 221 transitions, 452 flow [2023-11-19 07:44:33,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 221 transitions, 452 flow [2023-11-19 07:44:33,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:33,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 221 transitions, 452 flow [2023-11-19 07:44:33,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 221 transitions, 452 flow [2023-11-19 07:44:33,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 221 transitions, 452 flow [2023-11-19 07:44:33,612 INFO L124 PetriNetUnfolderBase]: 17/247 cut-off events. [2023-11-19 07:44:33,612 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:44:33,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 247 events. 17/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 573 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 163. Up to 6 conditions per place. [2023-11-19 07:44:33,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 14140 [2023-11-19 07:44:38,927 INFO L134 LiptonReduction]: Checked pairs total: 74787 [2023-11-19 07:44:38,927 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-11-19 07:44:38,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:38,931 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;@1e2ad85d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:38,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-19 07:44:38,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:38,932 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:44:38,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:38,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:38,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:44:38,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-19 07:44:38,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:38,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1120, now seen corresponding path program 1 times [2023-11-19 07:44:38,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:38,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8968971] [2023-11-19 07:44:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:38,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:38,950 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 07:44:38,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:38,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8968971] [2023-11-19 07:44:38,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8968971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:38,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:38,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:44:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236591526] [2023-11-19 07:44:38,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:38,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:44:38,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:38,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:44:38,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:44:38,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 417 [2023-11-19 07:44:38,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 190 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 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 07:44:38,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:38,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 417 [2023-11-19 07:44:38,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:39,155 INFO L124 PetriNetUnfolderBase]: 335/1045 cut-off events. [2023-11-19 07:44:39,155 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-19 07:44:39,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 1045 events. 335/1045 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7397 event pairs, 229 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 549. Up to 524 conditions per place. [2023-11-19 07:44:39,168 INFO L140 encePairwiseOnDemand]: 408/417 looper letters, 23 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2023-11-19 07:44:39,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 218 flow [2023-11-19 07:44:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:44:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:44:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 448 transitions. [2023-11-19 07:44:39,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371702637889688 [2023-11-19 07:44:39,177 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 448 transitions. [2023-11-19 07:44:39,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 448 transitions. [2023-11-19 07:44:39,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:39,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 448 transitions. [2023-11-19 07:44:39,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 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 07:44:39,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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 07:44:39,189 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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 07:44:39,189 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 190 flow. Second operand 2 states and 448 transitions. [2023-11-19 07:44:39,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 218 flow [2023-11-19 07:44:39,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 81 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:39,194 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 172 flow [2023-11-19 07:44:39,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=172, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2023-11-19 07:44:39,197 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -6 predicate places. [2023-11-19 07:44:39,197 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 172 flow [2023-11-19 07:44:39,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 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 07:44:39,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:39,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:44:39,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:44:39,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-19 07:44:39,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1036970271, now seen corresponding path program 1 times [2023-11-19 07:44:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439472415] [2023-11-19 07:44:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:39,372 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 07:44:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439472415] [2023-11-19 07:44:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439472415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:39,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738771796] [2023-11-19 07:44:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:39,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 417 [2023-11-19 07:44:39,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 07:44:39,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:39,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 417 [2023-11-19 07:44:39,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:39,965 INFO L124 PetriNetUnfolderBase]: 1424/3440 cut-off events. [2023-11-19 07:44:39,966 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-19 07:44:39,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5795 conditions, 3440 events. 1424/3440 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 27851 event pairs, 558 based on Foata normal form. 0/2900 useless extension candidates. Maximal degree in co-relation 5790. Up to 1274 conditions per place. [2023-11-19 07:44:40,004 INFO L140 encePairwiseOnDemand]: 397/417 looper letters, 58 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2023-11-19 07:44:40,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 385 flow [2023-11-19 07:44:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-11-19 07:44:40,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107913669064749 [2023-11-19 07:44:40,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-11-19 07:44:40,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-11-19 07:44:40,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:40,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-11-19 07:44:40,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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 07:44:40,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 07:44:40,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 07:44:40,020 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 172 flow. Second operand 3 states and 639 transitions. [2023-11-19 07:44:40,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 385 flow [2023-11-19 07:44:40,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:40,025 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 296 flow [2023-11-19 07:44:40,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2023-11-19 07:44:40,027 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -2 predicate places. [2023-11-19 07:44:40,028 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 296 flow [2023-11-19 07:44:40,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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 07:44:40,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:40,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:44:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:44:40,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-19 07:44:40,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -95989821, now seen corresponding path program 1 times [2023-11-19 07:44:40,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:40,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225486893] [2023-11-19 07:44:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:40,088 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 07:44:40,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:40,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225486893] [2023-11-19 07:44:40,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225486893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:40,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:40,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676633936] [2023-11-19 07:44:40,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:40,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:40,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:40,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 417 [2023-11-19 07:44:40,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 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 07:44:40,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:40,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 417 [2023-11-19 07:44:40,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:40,544 INFO L124 PetriNetUnfolderBase]: 1045/2965 cut-off events. [2023-11-19 07:44:40,544 INFO L125 PetriNetUnfolderBase]: For 387/399 co-relation queries the response was YES. [2023-11-19 07:44:40,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5200 conditions, 2965 events. 1045/2965 cut-off events. For 387/399 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 24650 event pairs, 733 based on Foata normal form. 0/2565 useless extension candidates. Maximal degree in co-relation 5193. Up to 1623 conditions per place. [2023-11-19 07:44:40,578 INFO L140 encePairwiseOnDemand]: 412/417 looper letters, 29 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-11-19 07:44:40,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 348 flow [2023-11-19 07:44:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:44:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:44:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-19 07:44:40,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708233413269384 [2023-11-19 07:44:40,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-19 07:44:40,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-19 07:44:40,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:40,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-19 07:44:40,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 07:44:40,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 07:44:40,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 07:44:40,591 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 296 flow. Second operand 3 states and 589 transitions. [2023-11-19 07:44:40,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 348 flow [2023-11-19 07:44:40,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:44:40,608 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 262 flow [2023-11-19 07:44:40,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2023-11-19 07:44:40,611 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -6 predicate places. [2023-11-19 07:44:40,611 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 262 flow [2023-11-19 07:44:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 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 07:44:40,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:40,615 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:44:40,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:44:40,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-11-19 07:44:40,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash -495783504, now seen corresponding path program 1 times [2023-11-19 07:44:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:40,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661003121] [2023-11-19 07:44:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:40,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:40,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:44:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:44:40,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:44:40,705 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:44:40,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-19 07:44:40,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2023-11-19 07:44:40,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2023-11-19 07:44:40,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2023-11-19 07:44:40,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2023-11-19 07:44:40,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2023-11-19 07:44:40,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2023-11-19 07:44:40,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2023-11-19 07:44:40,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2023-11-19 07:44:40,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2023-11-19 07:44:40,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2023-11-19 07:44:40,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2023-11-19 07:44:40,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2023-11-19 07:44:40,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2023-11-19 07:44:40,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2023-11-19 07:44:40,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2023-11-19 07:44:40,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2023-11-19 07:44:40,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2023-11-19 07:44:40,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2023-11-19 07:44:40,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2023-11-19 07:44:40,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2023-11-19 07:44:40,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2023-11-19 07:44:40,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2023-11-19 07:44:40,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2023-11-19 07:44:40,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2023-11-19 07:44:40,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2023-11-19 07:44:40,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2023-11-19 07:44:40,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2023-11-19 07:44:40,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2023-11-19 07:44:40,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2023-11-19 07:44:40,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr7ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2023-11-19 07:44:40,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:44:40,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:44:40,715 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:44:40,715 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:44:40,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:44:40,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 292 transitions, 602 flow [2023-11-19 07:44:40,833 INFO L124 PetriNetUnfolderBase]: 24/332 cut-off events. [2023-11-19 07:44:40,833 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:44:40,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 332 events. 24/332 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1038 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2023-11-19 07:44:40,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 292 transitions, 602 flow [2023-11-19 07:44:40,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 292 transitions, 602 flow [2023-11-19 07:44:40,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:44:40,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 292 transitions, 602 flow [2023-11-19 07:44:40,847 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 292 transitions, 602 flow [2023-11-19 07:44:40,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 292 transitions, 602 flow [2023-11-19 07:44:40,928 INFO L124 PetriNetUnfolderBase]: 24/332 cut-off events. [2023-11-19 07:44:40,928 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:44:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 332 events. 24/332 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1038 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2023-11-19 07:44:40,959 INFO L119 LiptonReduction]: Number of co-enabled transitions 36120 [2023-11-19 07:44:47,484 INFO L134 LiptonReduction]: Checked pairs total: 219399 [2023-11-19 07:44:47,484 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-11-19 07:44:47,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:44:47,487 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;@1e2ad85d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:44:47,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-19 07:44:47,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:44:47,489 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:44:47,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:44:47,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:47,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:44:47,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:44:47,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1722, now seen corresponding path program 1 times [2023-11-19 07:44:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923024071] [2023-11-19 07:44:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:47,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:47,498 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 07:44:47,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:47,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923024071] [2023-11-19 07:44:47,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923024071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:47,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:47,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:44:47,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697386128] [2023-11-19 07:44:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:47,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:44:47,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:47,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:44:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:44:47,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 533 [2023-11-19 07:44:47,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 128 transitions, 274 flow. Second operand has 2 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 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 07:44:47,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:47,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 533 [2023-11-19 07:44:47,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:44:49,050 INFO L124 PetriNetUnfolderBase]: 5326/11094 cut-off events. [2023-11-19 07:44:49,051 INFO L125 PetriNetUnfolderBase]: For 538/538 co-relation queries the response was YES. [2023-11-19 07:44:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18502 conditions, 11094 events. 5326/11094 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 104554 event pairs, 3661 based on Foata normal form. 0/8623 useless extension candidates. Maximal degree in co-relation 3148. Up to 7074 conditions per place. [2023-11-19 07:44:49,162 INFO L140 encePairwiseOnDemand]: 523/533 looper letters, 33 selfloop transitions, 0 changer transitions 0/118 dead transitions. [2023-11-19 07:44:49,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 320 flow [2023-11-19 07:44:49,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:44:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:44:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 591 transitions. [2023-11-19 07:44:49,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544090056285178 [2023-11-19 07:44:49,166 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 591 transitions. [2023-11-19 07:44:49,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 591 transitions. [2023-11-19 07:44:49,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:44:49,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 591 transitions. [2023-11-19 07:44:49,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 295.5) internal successors, (591), 2 states have internal predecessors, (591), 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 07:44:49,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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 07:44:49,175 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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 07:44:49,176 INFO L175 Difference]: Start difference. First operand has 126 places, 128 transitions, 274 flow. Second operand 2 states and 591 transitions. [2023-11-19 07:44:49,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 320 flow [2023-11-19 07:44:49,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 118 transitions, 318 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:44:49,181 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 252 flow [2023-11-19 07:44:49,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=252, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2023-11-19 07:44:49,184 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -6 predicate places. [2023-11-19 07:44:49,184 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 252 flow [2023-11-19 07:44:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 274.5) internal successors, (549), 2 states have internal predecessors, (549), 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 07:44:49,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:44:49,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:44:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:44:49,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:44:49,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash -339673570, now seen corresponding path program 1 times [2023-11-19 07:44:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:49,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75606629] [2023-11-19 07:44:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:49,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:44:49,223 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 07:44:49,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:44:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75606629] [2023-11-19 07:44:49,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75606629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:44:49,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:44:49,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:44:49,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197859723] [2023-11-19 07:44:49,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:44:49,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:44:49,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:44:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:44:49,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:44:49,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 533 [2023-11-19 07:44:49,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 07:44:49,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:44:49,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 533 [2023-11-19 07:44:49,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:00,147 INFO L124 PetriNetUnfolderBase]: 53288/98020 cut-off events. [2023-11-19 07:45:00,147 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2023-11-19 07:45:00,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172813 conditions, 98020 events. 53288/98020 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 4060. Compared 1064268 event pairs, 21025 based on Foata normal form. 0/81295 useless extension candidates. Maximal degree in co-relation 172807. Up to 41763 conditions per place. [2023-11-19 07:45:00,982 INFO L140 encePairwiseOnDemand]: 503/533 looper letters, 88 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2023-11-19 07:45:00,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 167 transitions, 578 flow [2023-11-19 07:45:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2023-11-19 07:45:00,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297060662914321 [2023-11-19 07:45:00,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2023-11-19 07:45:00,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2023-11-19 07:45:00,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:00,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2023-11-19 07:45:00,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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 07:45:00,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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 07:45:01,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 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 07:45:01,001 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 252 flow. Second operand 3 states and 847 transitions. [2023-11-19 07:45:01,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 167 transitions, 578 flow [2023-11-19 07:45:01,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 167 transitions, 578 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:01,013 INFO L231 Difference]: Finished difference. Result has 124 places, 139 transitions, 438 flow [2023-11-19 07:45:01,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=124, PETRI_TRANSITIONS=139} [2023-11-19 07:45:01,016 INFO L281 CegarLoopForPetriNet]: 126 programPoint places, -2 predicate places. [2023-11-19 07:45:01,016 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 139 transitions, 438 flow [2023-11-19 07:45:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 07:45:01,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:01,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:01,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:45:01,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-11-19 07:45:01,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash -8744960, now seen corresponding path program 1 times [2023-11-19 07:45:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:01,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718060882] [2023-11-19 07:45:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:01,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:01,068 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 07:45:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718060882] [2023-11-19 07:45:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718060882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:01,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:01,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522792413] [2023-11-19 07:45:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:01,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:01,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 533 [2023-11-19 07:45:01,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 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 07:45:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:01,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 533 [2023-11-19 07:45:01,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:03,081 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1331] L1041-2-->L1041-3: Formula: (= |v_#race~len~0_16| 0) InVars {} OutVars{#race~len~0=|v_#race~len~0_16|} AuxVars[] AssignedVars[#race~len~0][42], [281#true, Black: 284#true, thrThread1of3ForFork0InUse, 26#L1041-3true, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 239#L1043-1true, 125#L1048-1true]) [2023-11-19 07:45:03,081 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-11-19 07:45:03,081 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-19 07:45:03,081 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-19 07:45:03,082 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-11-19 07:45:03,413 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, 141#L1041-1true, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 125#L1048-1true]) [2023-11-19 07:45:03,413 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-11-19 07:45:03,413 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 07:45:03,413 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 07:45:03,413 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 07:45:04,047 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 174#L1041-2true, 125#L1048-1true]) [2023-11-19 07:45:04,048 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,048 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,058 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,058 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,060 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1331] L1041-2-->L1041-3: Formula: (= |v_#race~len~0_16| 0) InVars {} OutVars{#race~len~0=|v_#race~len~0_16|} AuxVars[] AssignedVars[#race~len~0][42], [281#true, Black: 284#true, thrThread1of3ForFork0InUse, 26#L1041-3true, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true, 239#L1043-1true]) [2023-11-19 07:45:04,060 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,061 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,061 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,061 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:04,229 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1331] L1041-2-->L1041-3: Formula: (= |v_#race~len~0_16| 0) InVars {} OutVars{#race~len~0=|v_#race~len~0_16|} AuxVars[] AssignedVars[#race~len~0][42], [281#true, Black: 284#true, 26#L1041-3true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 56#L1060-3true, 239#L1043-1true, 125#L1048-1true]) [2023-11-19 07:45:04,230 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,230 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,230 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,230 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,336 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, 141#L1041-1true, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true]) [2023-11-19 07:45:04,336 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,336 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,336 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,337 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-11-19 07:45:04,464 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 141#L1041-1true, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 56#L1060-3true, 125#L1048-1true]) [2023-11-19 07:45:04,465 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,465 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,465 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,465 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,606 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, Black: 284#true, 34#L1043-5true, thrThread1of3ForFork0InUse, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true, 174#L1041-2true]) [2023-11-19 07:45:04,606 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,606 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,606 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,606 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:04,736 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, Black: 284#true, 34#L1043-5true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 56#L1060-3true, 174#L1041-2true, 125#L1048-1true]) [2023-11-19 07:45:04,736 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,737 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,737 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,737 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,738 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1331] L1041-2-->L1041-3: Formula: (= |v_#race~len~0_16| 0) InVars {} OutVars{#race~len~0=|v_#race~len~0_16|} AuxVars[] AssignedVars[#race~len~0][42], [281#true, Black: 284#true, thrThread1of3ForFork0InUse, 26#L1041-3true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true, 56#L1060-3true, 239#L1043-1true]) [2023-11-19 07:45:04,739 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,739 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,739 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:04,739 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:05,311 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 141#L1041-1true, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true, 56#L1060-3true]) [2023-11-19 07:45:05,312 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-11-19 07:45:05,312 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-11-19 07:45:05,312 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-11-19 07:45:05,312 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-11-19 07:45:05,451 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 174#L1041-2true, 125#L1048-1true]) [2023-11-19 07:45:05,451 INFO L294 olderBase$Statistics]: this new event has 46 ancestors and is cut-off event [2023-11-19 07:45:05,451 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:05,451 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:05,451 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:05,451 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-11-19 07:45:05,452 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 3#L1023true, 286#(= |#race~next~0| 0), 174#L1041-2true]) [2023-11-19 07:45:05,452 INFO L294 olderBase$Statistics]: this new event has 45 ancestors and is cut-off event [2023-11-19 07:45:05,452 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 07:45:05,452 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 07:45:05,452 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-11-19 07:45:05,475 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, Black: 284#true, 34#L1043-5true, thrThread1of3ForFork0InUse, 59#L1060-4true, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true, 174#L1041-2true]) [2023-11-19 07:45:05,475 INFO L294 olderBase$Statistics]: this new event has 48 ancestors and is cut-off event [2023-11-19 07:45:05,476 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:05,476 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:05,476 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:05,476 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:05,665 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 123#L1048-4true, 56#L1060-3true, 174#L1041-2true]) [2023-11-19 07:45:05,666 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-11-19 07:45:05,666 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:45:05,666 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:45:05,666 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:45:06,695 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, Black: 284#true, 34#L1043-5true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 3#L1023true, 286#(= |#race~next~0| 0), 56#L1060-3true, 174#L1041-2true]) [2023-11-19 07:45:06,696 INFO L294 olderBase$Statistics]: this new event has 48 ancestors and is cut-off event [2023-11-19 07:45:06,696 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:06,696 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:06,696 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-11-19 07:45:06,697 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 286#(= |#race~next~0| 0), 56#L1060-3true, 174#L1041-2true, 125#L1048-1true]) [2023-11-19 07:45:06,697 INFO L294 olderBase$Statistics]: this new event has 49 ancestors and is cut-off event [2023-11-19 07:45:06,697 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:06,697 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:06,697 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:06,697 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-11-19 07:45:06,726 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([1516] L1043-3-->L1043-5: Formula: (= |v_thrThread1of3ForFork0_~end~0#1_19| v_~next~0_166) InVars {thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} OutVars{~next~0=v_~next~0_166, thrThread1of3ForFork0_#t~nondet5#1=|v_thrThread1of3ForFork0_#t~nondet5#1_13|, thrThread1of3ForFork0_~end~0#1=|v_thrThread1of3ForFork0_~end~0#1_19|} AuxVars[] AssignedVars[~next~0, thrThread1of3ForFork0_#t~nondet5#1][51], [281#true, 34#L1043-5true, Black: 284#true, thrThread1of3ForFork0InUse, thrThread2of3ForFork0InUse, 292#(= |#race~len~0| 0), thrThread3of3ForFork0InUse, 123#L1048-4true, 286#(= |#race~next~0| 0), 56#L1060-3true, 174#L1041-2true]) [2023-11-19 07:45:06,726 INFO L294 olderBase$Statistics]: this new event has 51 ancestors and is cut-off event [2023-11-19 07:45:06,726 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:45:06,727 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:45:06,727 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-11-19 07:45:06,727 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event