./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid-join.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_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/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_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/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_3619b471-07b1-43de-80e8-edeb1f001977/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 e58f19518df0581d95f13f906b8c44b8c282310d0c51162e45cefa58addde8de --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:36,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:36,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:56:36,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:36,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:36,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:36,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:36,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:36,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:36,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:36,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:36,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:36,267 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:36,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:36,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:36,269 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:36,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:36,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:36,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:36,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:36,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:36,274 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:36,275 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:56:36,275 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:36,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:36,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:36,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:36,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:36,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:36,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:36,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:36,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:36,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:36,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:36,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:36,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:36,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:36,285 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:36,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:36,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:36,285 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:36,286 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_3619b471-07b1-43de-80e8-edeb1f001977/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e58f19518df0581d95f13f906b8c44b8c282310d0c51162e45cefa58addde8de [2023-11-19 07:56:36,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:36,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:36,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:36,644 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:36,645 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:36,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid-join.i [2023-11-19 07:56:39,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:40,361 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:40,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid-join.i [2023-11-19 07:56:40,385 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/data/5d6ab3b4d/8ed70b3c77c64b51b30ae5a367f557fc/FLAG40344d752 [2023-11-19 07:56:40,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/data/5d6ab3b4d/8ed70b3c77c64b51b30ae5a367f557fc [2023-11-19 07:56:40,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:40,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:40,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:40,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:40,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:40,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:40" (1/1) ... [2023-11-19 07:56:40,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b7a022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:40, skipping insertion in model container [2023-11-19 07:56:40,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:40" (1/1) ... [2023-11-19 07:56:40,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:40,673 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:56:41,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:41,158 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:41,173 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:56:41,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:41,272 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:56:41,281 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:41,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41 WrapperNode [2023-11-19 07:56:41,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:41,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:41,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:41,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:41,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,346 INFO L138 Inliner]: procedures = 267, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-11-19 07:56:41,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:41,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:41,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:41,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:41,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:41,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:41,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:41,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:41,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:41,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:41,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:56:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:56:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:56:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:56:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:56:41,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:56:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:41,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:41,554 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 07:56:41,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:41,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:42,067 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:42,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:42,080 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:56:42,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:42 BoogieIcfgContainer [2023-11-19 07:56:42,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:42,122 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:42,122 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:42,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:42,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:40" (1/3) ... [2023-11-19 07:56:42,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434ae914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:42, skipping insertion in model container [2023-11-19 07:56:42,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41" (2/3) ... [2023-11-19 07:56:42,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434ae914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:42, skipping insertion in model container [2023-11-19 07:56:42,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:42" (3/3) ... [2023-11-19 07:56:42,144 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-tid-join.i [2023-11-19 07:56:42,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:56:42,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:42,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:56:42,206 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:56:42,329 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:56:42,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 111 transitions, 229 flow [2023-11-19 07:56:42,458 INFO L124 PetriNetUnfolderBase]: 6/157 cut-off events. [2023-11-19 07:56:42,459 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 157 events. 6/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-11-19 07:56:42,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 111 transitions, 229 flow [2023-11-19 07:56:42,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 229 flow [2023-11-19 07:56:42,486 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:42,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 111 transitions, 229 flow [2023-11-19 07:56:42,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 111 transitions, 229 flow [2023-11-19 07:56:42,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 111 transitions, 229 flow [2023-11-19 07:56:42,554 INFO L124 PetriNetUnfolderBase]: 6/157 cut-off events. [2023-11-19 07:56:42,555 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:42,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 157 events. 6/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-11-19 07:56:42,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 1560 [2023-11-19 07:56:48,690 INFO L134 LiptonReduction]: Checked pairs total: 2109 [2023-11-19 07:56:48,691 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-19 07:56:48,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:48,719 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;@23697182, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:48,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:56:48,723 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:48,723 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:56:48,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:48,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:48,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:48,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:56:48,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 12795, now seen corresponding path program 1 times [2023-11-19 07:56:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:48,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750068975] [2023-11-19 07:56:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:48,985 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 07:56:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750068975] [2023-11-19 07:56:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750068975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:48,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995233357] [2023-11-19 07:56:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:48,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:49,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:49,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 221 [2023-11-19 07:56:49,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 49 flow. Second operand has 2 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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 07:56:49,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:49,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 221 [2023-11-19 07:56:49,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:49,124 INFO L124 PetriNetUnfolderBase]: 19/66 cut-off events. [2023-11-19 07:56:49,124 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:49,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 66 events. 19/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 206 event pairs, 18 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 99. Up to 55 conditions per place. [2023-11-19 07:56:49,127 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 13 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-11-19 07:56:49,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 67 flow [2023-11-19 07:56:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:56:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2023-11-19 07:56:49,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180995475113123 [2023-11-19 07:56:49,154 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 229 transitions. [2023-11-19 07:56:49,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 229 transitions. [2023-11-19 07:56:49,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:49,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 229 transitions. [2023-11-19 07:56:49,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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 07:56:49,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 07:56:49,179 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 07:56:49,182 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 49 flow. Second operand 2 states and 229 transitions. [2023-11-19 07:56:49,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 67 flow [2023-11-19 07:56:49,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 67 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:49,191 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 41 flow [2023-11-19 07:56:49,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=41, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2023-11-19 07:56:49,201 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-11-19 07:56:49,202 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 41 flow [2023-11-19 07:56:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 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 07:56:49,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:49,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:56:49,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:49,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:56:49,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash 12282641, now seen corresponding path program 1 times [2023-11-19 07:56:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:49,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450638480] [2023-11-19 07:56:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:49,327 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 07:56:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450638480] [2023-11-19 07:56:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450638480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:49,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:49,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442694909] [2023-11-19 07:56:49,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:49,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:49,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:49,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:49,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 221 [2023-11-19 07:56:49,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 07:56:49,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:49,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 221 [2023-11-19 07:56:49,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:49,435 INFO L124 PetriNetUnfolderBase]: 24/81 cut-off events. [2023-11-19 07:56:49,435 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:56:49,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 81 events. 24/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 272 event pairs, 13 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 156. Up to 50 conditions per place. [2023-11-19 07:56:49,437 INFO L140 encePairwiseOnDemand]: 217/221 looper letters, 14 selfloop transitions, 3 changer transitions 3/22 dead transitions. [2023-11-19 07:56:49,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 91 flow [2023-11-19 07:56:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-11-19 07:56:49,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49321266968325794 [2023-11-19 07:56:49,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-11-19 07:56:49,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-11-19 07:56:49,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:49,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-11-19 07:56:49,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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 07:56:49,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 07:56:49,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 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 07:56:49,452 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 41 flow. Second operand 3 states and 327 transitions. [2023-11-19 07:56:49,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 91 flow [2023-11-19 07:56:49,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:49,455 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 56 flow [2023-11-19 07:56:49,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-11-19 07:56:49,457 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-11-19 07:56:49,458 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 56 flow [2023-11-19 07:56:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 07:56:49,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:49,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:56:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:49,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 07:56:49,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1053899964, now seen corresponding path program 1 times [2023-11-19 07:56:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834843374] [2023-11-19 07:56:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:49,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:49,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:49,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:49,685 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:56:49,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-19 07:56:49,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-11-19 07:56:49,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-11-19 07:56:49,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-11-19 07:56:49,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-11-19 07:56:49,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-11-19 07:56:49,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-11-19 07:56:49,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-11-19 07:56:49,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:56:49,692 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:56:49,695 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:56:49,696 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:56:49,722 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:56:49,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 128 transitions, 272 flow [2023-11-19 07:56:49,805 INFO L124 PetriNetUnfolderBase]: 11/281 cut-off events. [2023-11-19 07:56:49,806 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:49,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 281 events. 11/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 552 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place. [2023-11-19 07:56:49,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 128 transitions, 272 flow [2023-11-19 07:56:49,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 128 transitions, 272 flow [2023-11-19 07:56:49,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:49,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 128 transitions, 272 flow [2023-11-19 07:56:49,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 128 transitions, 272 flow [2023-11-19 07:56:49,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 128 transitions, 272 flow [2023-11-19 07:56:49,864 INFO L124 PetriNetUnfolderBase]: 11/281 cut-off events. [2023-11-19 07:56:49,865 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:56:49,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 281 events. 11/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 552 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place. [2023-11-19 07:56:49,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 4500 [2023-11-19 07:56:55,559 INFO L134 LiptonReduction]: Checked pairs total: 8731 [2023-11-19 07:56:55,560 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-11-19 07:56:55,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:55,564 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;@23697182, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:55,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 07:56:55,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:55,567 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:56:55,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:55,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:55,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:55,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:55,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 21238, now seen corresponding path program 1 times [2023-11-19 07:56:55,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:55,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712329997] [2023-11-19 07:56:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:55,595 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 07:56:55,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712329997] [2023-11-19 07:56:55,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712329997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:55,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493434138] [2023-11-19 07:56:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:55,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:55,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 246 [2023-11-19 07:56:55,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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 07:56:55,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:55,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 246 [2023-11-19 07:56:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:55,795 INFO L124 PetriNetUnfolderBase]: 382/806 cut-off events. [2023-11-19 07:56:55,795 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-19 07:56:55,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 806 events. 382/806 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4215 event pairs, 374 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 644. Up to 673 conditions per place. [2023-11-19 07:56:55,807 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 21 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-11-19 07:56:55,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 116 flow [2023-11-19 07:56:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:56:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2023-11-19 07:56:55,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2023-11-19 07:56:55,810 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2023-11-19 07:56:55,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2023-11-19 07:56:55,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:55,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2023-11-19 07:56:55,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 07:56:55,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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 07:56:55,818 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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 07:56:55,818 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 82 flow. Second operand 2 states and 267 transitions. [2023-11-19 07:56:55,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 116 flow [2023-11-19 07:56:55,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:55,822 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 74 flow [2023-11-19 07:56:55,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-11-19 07:56:55,826 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2023-11-19 07:56:55,826 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 74 flow [2023-11-19 07:56:55,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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 07:56:55,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:55,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:56:55,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:56:55,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:55,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash 20407607, now seen corresponding path program 1 times [2023-11-19 07:56:55,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:55,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735817216] [2023-11-19 07:56:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:55,895 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 07:56:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735817216] [2023-11-19 07:56:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735817216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:55,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:55,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:55,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234365504] [2023-11-19 07:56:55,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:55,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:55,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:55,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:55,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 246 [2023-11-19 07:56:55,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 07:56:55,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:55,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 246 [2023-11-19 07:56:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:56,206 INFO L124 PetriNetUnfolderBase]: 679/1281 cut-off events. [2023-11-19 07:56:56,207 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-19 07:56:56,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1281 events. 679/1281 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6818 event pairs, 416 based on Foata normal form. 0/1155 useless extension candidates. Maximal degree in co-relation 2512. Up to 850 conditions per place. [2023-11-19 07:56:56,218 INFO L140 encePairwiseOnDemand]: 241/246 looper letters, 32 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-11-19 07:56:56,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 170 flow [2023-11-19 07:56:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-19 07:56:56,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521680216802168 [2023-11-19 07:56:56,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-19 07:56:56,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-19 07:56:56,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:56,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-19 07:56:56,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 07:56:56,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 07:56:56,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 07:56:56,229 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 74 flow. Second operand 3 states and 385 transitions. [2023-11-19 07:56:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 170 flow [2023-11-19 07:56:56,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:56:56,232 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 104 flow [2023-11-19 07:56:56,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-19 07:56:56,234 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2023-11-19 07:56:56,235 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 104 flow [2023-11-19 07:56:56,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 07:56:56,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:56,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:56,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:56:56,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:56,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1111073558, now seen corresponding path program 1 times [2023-11-19 07:56:56,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983936268] [2023-11-19 07:56:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:56,332 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 07:56:56,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983936268] [2023-11-19 07:56:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983936268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:56,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:56,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649611061] [2023-11-19 07:56:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:56,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:56,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 246 [2023-11-19 07:56:56,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 07:56:56,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:56,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 246 [2023-11-19 07:56:56,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:56,713 INFO L124 PetriNetUnfolderBase]: 739/1420 cut-off events. [2023-11-19 07:56:56,713 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2023-11-19 07:56:56,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3142 conditions, 1420 events. 739/1420 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8174 event pairs, 430 based on Foata normal form. 0/1298 useless extension candidates. Maximal degree in co-relation 3135. Up to 943 conditions per place. [2023-11-19 07:56:56,725 INFO L140 encePairwiseOnDemand]: 240/246 looper letters, 35 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-11-19 07:56:56,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 240 flow [2023-11-19 07:56:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-11-19 07:56:56,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-11-19 07:56:56,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-11-19 07:56:56,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-11-19 07:56:56,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:56,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-11-19 07:56:56,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 07:56:56,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 07:56:56,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 07:56:56,737 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 104 flow. Second operand 3 states and 382 transitions. [2023-11-19 07:56:56,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 240 flow [2023-11-19 07:56:56,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:56,749 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 152 flow [2023-11-19 07:56:56,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-11-19 07:56:56,754 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-11-19 07:56:56,754 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 152 flow [2023-11-19 07:56:56,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 07:56:56,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:56,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:56,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:56:56,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:56,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash -373169283, now seen corresponding path program 1 times [2023-11-19 07:56:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511356834] [2023-11-19 07:56:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:56,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511356834] [2023-11-19 07:56:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511356834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:56,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510968422] [2023-11-19 07:56:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:56,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:56,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:56:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:56,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:57,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:57,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:57,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510968422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:57,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:57,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-19 07:56:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602708373] [2023-11-19 07:56:57,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:56:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:56:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:57,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2023-11-19 07:56:57,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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 07:56:57,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:57,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2023-11-19 07:56:57,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:57,767 INFO L124 PetriNetUnfolderBase]: 370/765 cut-off events. [2023-11-19 07:56:57,767 INFO L125 PetriNetUnfolderBase]: For 595/619 co-relation queries the response was YES. [2023-11-19 07:56:57,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 765 events. 370/765 cut-off events. For 595/619 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3783 event pairs, 149 based on Foata normal form. 57/772 useless extension candidates. Maximal degree in co-relation 1895. Up to 293 conditions per place. [2023-11-19 07:56:57,773 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 45 selfloop transitions, 6 changer transitions 27/89 dead transitions. [2023-11-19 07:56:57,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 488 flow [2023-11-19 07:56:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:56:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:56:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 931 transitions. [2023-11-19 07:56:57,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730691056910569 [2023-11-19 07:56:57,778 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 931 transitions. [2023-11-19 07:56:57,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 931 transitions. [2023-11-19 07:56:57,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:57,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 931 transitions. [2023-11-19 07:56:57,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 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 07:56:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 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 07:56:57,791 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 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 07:56:57,791 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 152 flow. Second operand 8 states and 931 transitions. [2023-11-19 07:56:57,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 488 flow [2023-11-19 07:56:57,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 89 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:57,796 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 167 flow [2023-11-19 07:56:57,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-11-19 07:56:57,797 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-11-19 07:56:57,797 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 167 flow [2023-11-19 07:56:57,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 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 07:56:57,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:57,798 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:56:57,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:58,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:58,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-19 07:56:58,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:58,018 INFO L85 PathProgramCache]: Analyzing trace with hash 430640338, now seen corresponding path program 1 times [2023-11-19 07:56:58,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:58,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914537301] [2023-11-19 07:56:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:58,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:58,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:58,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:58,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:56:58,138 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 07:56:58,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 07:56:58,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 07:56:58,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 07:56:58,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 07:56:58,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 07:56:58,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 07:56:58,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 07:56:58,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 07:56:58,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:56:58,141 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:56:58,143 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:56:58,143 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:56:58,181 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:56:58,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 145 transitions, 317 flow [2023-11-19 07:56:58,307 INFO L124 PetriNetUnfolderBase]: 21/490 cut-off events. [2023-11-19 07:56:58,307 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:56:58,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 490 events. 21/490 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1283 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-11-19 07:56:58,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 145 transitions, 317 flow [2023-11-19 07:56:58,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 145 transitions, 317 flow [2023-11-19 07:56:58,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:56:58,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 145 transitions, 317 flow [2023-11-19 07:56:58,312 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 145 transitions, 317 flow [2023-11-19 07:56:58,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 145 transitions, 317 flow [2023-11-19 07:56:58,389 INFO L124 PetriNetUnfolderBase]: 21/490 cut-off events. [2023-11-19 07:56:58,389 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:56:58,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 490 events. 21/490 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1283 event pairs, 1 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-11-19 07:56:58,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-11-19 07:57:04,513 INFO L134 LiptonReduction]: Checked pairs total: 15541 [2023-11-19 07:57:04,514 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-11-19 07:57:04,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:04,517 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;@23697182, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:04,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 07:57:04,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:04,519 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:57:04,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:04,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:04,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:57:04,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:04,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash 30363, now seen corresponding path program 1 times [2023-11-19 07:57:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285512192] [2023-11-19 07:57:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:04,541 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 07:57:04,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285512192] [2023-11-19 07:57:04,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285512192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:04,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:04,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720007035] [2023-11-19 07:57:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:04,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:04,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 269 [2023-11-19 07:57:04,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 07:57:04,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:04,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 269 [2023-11-19 07:57:04,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:05,340 INFO L124 PetriNetUnfolderBase]: 3378/5889 cut-off events. [2023-11-19 07:57:05,340 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2023-11-19 07:57:05,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11202 conditions, 5889 events. 3378/5889 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 38841 event pairs, 3328 based on Foata normal form. 0/5353 useless extension candidates. Maximal degree in co-relation 1507. Up to 5049 conditions per place. [2023-11-19 07:57:05,386 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 27 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-11-19 07:57:05,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 155 flow [2023-11-19 07:57:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:57:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 303 transitions. [2023-11-19 07:57:05,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631970260223048 [2023-11-19 07:57:05,389 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 303 transitions. [2023-11-19 07:57:05,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 303 transitions. [2023-11-19 07:57:05,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:05,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 303 transitions. [2023-11-19 07:57:05,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 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 07:57:05,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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 07:57:05,393 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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 07:57:05,393 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 109 flow. Second operand 2 states and 303 transitions. [2023-11-19 07:57:05,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 155 flow [2023-11-19 07:57:05,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:05,396 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 101 flow [2023-11-19 07:57:05,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=101, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-19 07:57:05,398 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-11-19 07:57:05,398 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 101 flow [2023-11-19 07:57:05,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 07:57:05,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:05,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:57:05,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:57:05,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:05,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 29184063, now seen corresponding path program 1 times [2023-11-19 07:57:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:05,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696765899] [2023-11-19 07:57:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:05,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:05,431 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 07:57:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696765899] [2023-11-19 07:57:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696765899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:05,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:05,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147072478] [2023-11-19 07:57:05,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:05,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 269 [2023-11-19 07:57:05,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 07:57:05,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:05,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 269 [2023-11-19 07:57:05,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:06,860 INFO L124 PetriNetUnfolderBase]: 7618/11966 cut-off events. [2023-11-19 07:57:06,860 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2023-11-19 07:57:06,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23635 conditions, 11966 events. 7618/11966 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 74674 event pairs, 4897 based on Foata normal form. 0/11078 useless extension candidates. Maximal degree in co-relation 23629. Up to 8281 conditions per place. [2023-11-19 07:57:06,948 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 43 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-11-19 07:57:06,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 231 flow [2023-11-19 07:57:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-11-19 07:57:06,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439900867410161 [2023-11-19 07:57:06,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-11-19 07:57:06,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-11-19 07:57:06,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:06,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-11-19 07:57:06,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 07:57:06,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:06,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:06,956 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 101 flow. Second operand 3 states and 439 transitions. [2023-11-19 07:57:06,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 231 flow [2023-11-19 07:57:06,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:06,959 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 139 flow [2023-11-19 07:57:06,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-19 07:57:06,961 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-11-19 07:57:06,961 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 139 flow [2023-11-19 07:57:06,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 07:57:06,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:06,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:06,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:57:06,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:06,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:06,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1653834374, now seen corresponding path program 1 times [2023-11-19 07:57:06,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:06,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090167847] [2023-11-19 07:57:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:07,002 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 07:57:07,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:07,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090167847] [2023-11-19 07:57:07,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090167847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:07,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:07,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637542786] [2023-11-19 07:57:07,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:07,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:07,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 269 [2023-11-19 07:57:07,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 07:57:07,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:07,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 269 [2023-11-19 07:57:07,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:08,815 INFO L124 PetriNetUnfolderBase]: 8140/13055 cut-off events. [2023-11-19 07:57:08,815 INFO L125 PetriNetUnfolderBase]: For 3385/3385 co-relation queries the response was YES. [2023-11-19 07:57:08,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29141 conditions, 13055 events. 8140/13055 cut-off events. For 3385/3385 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 87041 event pairs, 6157 based on Foata normal form. 0/12133 useless extension candidates. Maximal degree in co-relation 29133. Up to 10670 conditions per place. [2023-11-19 07:57:08,908 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 49 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-11-19 07:57:08,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 335 flow [2023-11-19 07:57:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-11-19 07:57:08,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415117719950434 [2023-11-19 07:57:08,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-11-19 07:57:08,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-11-19 07:57:08,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:08,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-11-19 07:57:08,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 07:57:08,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:08,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:08,917 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 139 flow. Second operand 3 states and 437 transitions. [2023-11-19 07:57:08,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 335 flow [2023-11-19 07:57:09,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:09,055 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 189 flow [2023-11-19 07:57:09,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-19 07:57:09,057 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-11-19 07:57:09,057 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 189 flow [2023-11-19 07:57:09,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 07:57:09,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:09,058 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:09,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:57:09,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:09,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1144480558, now seen corresponding path program 1 times [2023-11-19 07:57:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153167181] [2023-11-19 07:57:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153167181] [2023-11-19 07:57:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153167181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:09,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737794931] [2023-11-19 07:57:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:09,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:09,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 269 [2023-11-19 07:57:09,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 07:57:09,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:09,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 269 [2023-11-19 07:57:09,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:10,815 INFO L124 PetriNetUnfolderBase]: 9348/14890 cut-off events. [2023-11-19 07:57:10,816 INFO L125 PetriNetUnfolderBase]: For 8265/8514 co-relation queries the response was YES. [2023-11-19 07:57:10,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36402 conditions, 14890 events. 9348/14890 cut-off events. For 8265/8514 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 100817 event pairs, 6574 based on Foata normal form. 0/13620 useless extension candidates. Maximal degree in co-relation 36393. Up to 12335 conditions per place. [2023-11-19 07:57:10,901 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 52 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2023-11-19 07:57:10,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 70 transitions, 396 flow [2023-11-19 07:57:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-11-19 07:57:10,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540272614622057 [2023-11-19 07:57:10,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-11-19 07:57:10,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-11-19 07:57:10,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:10,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-11-19 07:57:10,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 07:57:10,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:10,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:10,908 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 189 flow. Second operand 3 states and 436 transitions. [2023-11-19 07:57:10,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 70 transitions, 396 flow [2023-11-19 07:57:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 70 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:10,991 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 257 flow [2023-11-19 07:57:10,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-11-19 07:57:10,992 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-19 07:57:10,992 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 257 flow [2023-11-19 07:57:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 07:57:10,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:10,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:10,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:57:10,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:10,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1942182738, now seen corresponding path program 1 times [2023-11-19 07:57:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:10,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149544552] [2023-11-19 07:57:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149544552] [2023-11-19 07:57:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149544552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800014789] [2023-11-19 07:57:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:11,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:11,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:11,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:11,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:11,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800014789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:11,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-19 07:57:11,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380757375] [2023-11-19 07:57:11,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:11,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 269 [2023-11-19 07:57:11,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 124.88888888888889) internal successors, (1124), 9 states have internal predecessors, (1124), 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 07:57:11,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:11,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 269 [2023-11-19 07:57:11,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:12,948 INFO L124 PetriNetUnfolderBase]: 4570/7797 cut-off events. [2023-11-19 07:57:12,949 INFO L125 PetriNetUnfolderBase]: For 6105/7325 co-relation queries the response was YES. [2023-11-19 07:57:12,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19590 conditions, 7797 events. 4570/7797 cut-off events. For 6105/7325 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 52068 event pairs, 1009 based on Foata normal form. 644/7983 useless extension candidates. Maximal degree in co-relation 19580. Up to 2391 conditions per place. [2023-11-19 07:57:12,996 INFO L140 encePairwiseOnDemand]: 261/269 looper letters, 104 selfloop transitions, 8 changer transitions 4/135 dead transitions. [2023-11-19 07:57:12,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 135 transitions, 777 flow [2023-11-19 07:57:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:57:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:57:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1203 transitions. [2023-11-19 07:57:13,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969021065675341 [2023-11-19 07:57:13,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1203 transitions. [2023-11-19 07:57:13,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1203 transitions. [2023-11-19 07:57:13,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1203 transitions. [2023-11-19 07:57:13,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.66666666666666) internal successors, (1203), 9 states have internal predecessors, (1203), 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 07:57:13,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 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 07:57:13,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 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 07:57:13,016 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 257 flow. Second operand 9 states and 1203 transitions. [2023-11-19 07:57:13,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 135 transitions, 777 flow [2023-11-19 07:57:13,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 135 transitions, 758 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:13,028 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 297 flow [2023-11-19 07:57:13,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-11-19 07:57:13,029 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2023-11-19 07:57:13,029 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 297 flow [2023-11-19 07:57:13,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 124.88888888888889) internal successors, (1124), 9 states have internal predecessors, (1124), 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 07:57:13,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:13,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3619b471-07b1-43de-80e8-edeb1f001977/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:13,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1756641183, now seen corresponding path program 1 times [2023-11-19 07:57:13,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190561806] [2023-11-19 07:57:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190561806] [2023-11-19 07:57:13,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190561806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:13,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468696656] [2023-11-19 07:57:13,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:13,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 269 [2023-11-19 07:57:13,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:57:13,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:13,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 269 [2023-11-19 07:57:13,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:13,906 INFO L124 PetriNetUnfolderBase]: 803/1964 cut-off events. [2023-11-19 07:57:13,907 INFO L125 PetriNetUnfolderBase]: For 2819/2829 co-relation queries the response was YES. [2023-11-19 07:57:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 1964 events. 803/1964 cut-off events. For 2819/2829 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13801 event pairs, 166 based on Foata normal form. 371/2283 useless extension candidates. Maximal degree in co-relation 5956. Up to 1256 conditions per place. [2023-11-19 07:57:13,918 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 45 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-11-19 07:57:13,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 426 flow [2023-11-19 07:57:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-11-19 07:57:13,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315985130111525 [2023-11-19 07:57:13,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-11-19 07:57:13,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-11-19 07:57:13,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-11-19 07:57:13,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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 07:57:13,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:13,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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 07:57:13,931 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 297 flow. Second operand 3 states and 429 transitions. [2023-11-19 07:57:13,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 426 flow [2023-11-19 07:57:13,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:13,943 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 241 flow [2023-11-19 07:57:13,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-19 07:57:13,944 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-11-19 07:57:13,944 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 241 flow [2023-11-19 07:57:13,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:57:13,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,945 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:57:13,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2023-11-19 07:57:13,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1035230600, now seen corresponding path program 1 times [2023-11-19 07:57:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80500956] [2023-11-19 07:57:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:14,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:14,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:14,058 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:57:14,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-19 07:57:14,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-19 07:57:14,058 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-19 07:57:14,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-19 07:57:14,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-19 07:57:14,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-19 07:57:14,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-19 07:57:14,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-19 07:57:14,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-19 07:57:14,060 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-19 07:57:14,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:57:14,060 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:14,061 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:57:14,061 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:57:14,092 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:57:14,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 162 transitions, 364 flow [2023-11-19 07:57:14,343 INFO L124 PetriNetUnfolderBase]: 43/871 cut-off events. [2023-11-19 07:57:14,344 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:57:14,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 871 events. 43/871 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3090 event pairs, 6 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 510. Up to 32 conditions per place. [2023-11-19 07:57:14,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 162 transitions, 364 flow [2023-11-19 07:57:14,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 162 transitions, 364 flow [2023-11-19 07:57:14,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:14,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 162 transitions, 364 flow [2023-11-19 07:57:14,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 162 transitions, 364 flow [2023-11-19 07:57:14,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 162 transitions, 364 flow [2023-11-19 07:57:14,554 INFO L124 PetriNetUnfolderBase]: 43/871 cut-off events. [2023-11-19 07:57:14,554 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:57:14,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 871 events. 43/871 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 3090 event pairs, 6 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 510. Up to 32 conditions per place. [2023-11-19 07:57:14,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 11160 [2023-11-19 07:57:20,143 INFO L134 LiptonReduction]: Checked pairs total: 23955 [2023-11-19 07:57:20,143 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-19 07:57:20,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:20,146 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;@23697182, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:20,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:57:20,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:20,147 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-19 07:57:20,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:20,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:20,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:57:20,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2023-11-19 07:57:20,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 40346, now seen corresponding path program 1 times [2023-11-19 07:57:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405559155] [2023-11-19 07:57:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:20,172 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 07:57:20,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405559155] [2023-11-19 07:57:20,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405559155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:20,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:20,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:57:20,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260634674] [2023-11-19 07:57:20,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:20,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:20,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 295 [2023-11-19 07:57:20,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 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 07:57:20,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:20,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 295 [2023-11-19 07:57:20,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand