./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU --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 ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:17:11,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:17:11,316 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:17:11,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:17:11,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:17:11,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:17:11,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:17:11,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:17:11,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:17:11,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:17:11,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:17:11,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:17:11,380 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:17:11,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:17:11,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:17:11,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:17:11,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:17:11,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:17:11,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:17:11,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:17:11,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:17:11,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:17:11,387 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:17:11,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:17:11,399 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:17:11,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:17:11,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:17:11,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:17:11,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:17:11,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:17:11,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:17:11,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:11,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:17:11,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:17:11,402 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:17:11,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:17:11,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:17:11,403 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:17:11,403 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:17:11,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:17:11,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:17:11,405 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_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c [2024-10-31 22:17:11,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:17:11,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:17:11,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:17:11,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:17:11,771 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:17:11,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i Unable to find full path for "g++" [2024-10-31 22:17:13,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:17:14,260 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:17:14,261 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-31 22:17:14,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/data/4f4fb3b08/9388ac3da77a41579763c7b9ea0cb403/FLAGcbf28d038 [2024-10-31 22:17:14,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/data/4f4fb3b08/9388ac3da77a41579763c7b9ea0cb403 [2024-10-31 22:17:14,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:17:14,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:17:14,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:14,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:17:14,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:17:14,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:14" (1/1) ... [2024-10-31 22:17:14,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756e5083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:14, skipping insertion in model container [2024-10-31 22:17:14,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:17:14" (1/1) ... [2024-10-31 22:17:14,590 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:17:15,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:15,281 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:17:15,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:17:15,453 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:17:15,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15 WrapperNode [2024-10-31 22:17:15,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:17:15,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:15,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:17:15,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:17:15,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,535 INFO L138 Inliner]: procedures = 252, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2024-10-31 22:17:15,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:17:15,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:17:15,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:17:15,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:17:15,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:17:15,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:17:15,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:17:15,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:17:15,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (1/1) ... [2024-10-31 22:17:15,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:17:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:15,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:17:15,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:17:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:17:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:17:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:17:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:17:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:17:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:17:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:17:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:17:15,685 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:17:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:17:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:17:15,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:17:15,687 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:17:15,858 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:17:15,861 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:17:16,317 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:17:16,317 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:17:16,372 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:17:16,372 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-31 22:17:16,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:16 BoogieIcfgContainer [2024-10-31 22:17:16,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:17:16,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:17:16,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:17:16,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:17:16,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:17:14" (1/3) ... [2024-10-31 22:17:16,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc83e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:16, skipping insertion in model container [2024-10-31 22:17:16,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:17:15" (2/3) ... [2024-10-31 22:17:16,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc83e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:17:16, skipping insertion in model container [2024-10-31 22:17:16,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:17:16" (3/3) ... [2024-10-31 22:17:16,382 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-10-31 22:17:16,402 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:17:16,402 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-10-31 22:17:16,403 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:17:16,505 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:17:16,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 215 transitions, 437 flow [2024-10-31 22:17:16,720 INFO L124 PetriNetUnfolderBase]: 26/284 cut-off events. [2024-10-31 22:17:16,722 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:17:16,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 284 events. 26/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1002 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 4 conditions per place. [2024-10-31 22:17:16,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 215 transitions, 437 flow [2024-10-31 22:17:16,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 215 transitions, 437 flow [2024-10-31 22:17:16,760 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:16,771 INFO L333 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, 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;@3d5cd432, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:16,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-31 22:17:16,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:16,787 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-31 22:17:16,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:16,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:16,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:16,792 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:17:16,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:16,800 INFO L85 PathProgramCache]: Analyzing trace with hash 189687217, now seen corresponding path program 1 times [2024-10-31 22:17:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310061906] [2024-10-31 22:17:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:17,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310061906] [2024-10-31 22:17:17,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310061906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:17,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:17,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576781289] [2024-10-31 22:17:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:17,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:17,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:17,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:17,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 215 [2024-10-31 22:17:17,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2024-10-31 22:17:17,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:17,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 215 [2024-10-31 22:17:17,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:17,915 INFO L124 PetriNetUnfolderBase]: 122/1040 cut-off events. [2024-10-31 22:17:17,916 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:17:17,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 1040 events. 122/1040 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6795 event pairs, 99 based on Foata normal form. 137/1064 useless extension candidates. Maximal degree in co-relation 1235. Up to 254 conditions per place. [2024-10-31 22:17:17,929 INFO L140 encePairwiseOnDemand]: 194/215 looper letters, 36 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2024-10-31 22:17:17,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 497 flow [2024-10-31 22:17:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2024-10-31 22:17:17,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8992248062015504 [2024-10-31 22:17:17,964 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 437 flow. Second operand 3 states and 580 transitions. [2024-10-31 22:17:17,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 497 flow [2024-10-31 22:17:17,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 207 transitions, 497 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:17,980 INFO L231 Difference]: Finished difference. Result has 199 places, 195 transitions, 405 flow [2024-10-31 22:17:17,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=199, PETRI_TRANSITIONS=195} [2024-10-31 22:17:17,990 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 1 predicate places. [2024-10-31 22:17:17,990 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 195 transitions, 405 flow [2024-10-31 22:17:17,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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) [2024-10-31 22:17:17,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:17,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:17,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:17:17,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:17:17,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash 888542706, now seen corresponding path program 1 times [2024-10-31 22:17:17,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615110893] [2024-10-31 22:17:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:18,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:18,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615110893] [2024-10-31 22:17:18,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615110893] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:18,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936218461] [2024-10-31 22:17:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:18,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:18,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:18,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:19,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 215 [2024-10-31 22:17:19,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 195 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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) [2024-10-31 22:17:19,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:19,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 215 [2024-10-31 22:17:19,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:19,571 INFO L124 PetriNetUnfolderBase]: 244/1392 cut-off events. [2024-10-31 22:17:19,571 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-31 22:17:19,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 1392 events. 244/1392 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 10445 event pairs, 166 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 1861. Up to 387 conditions per place. [2024-10-31 22:17:19,609 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 80 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2024-10-31 22:17:19,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 242 transitions, 669 flow [2024-10-31 22:17:19,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1034 transitions. [2024-10-31 22:17:19,616 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8015503875968992 [2024-10-31 22:17:19,616 INFO L175 Difference]: Start difference. First operand has 199 places, 195 transitions, 405 flow. Second operand 6 states and 1034 transitions. [2024-10-31 22:17:19,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 242 transitions, 669 flow [2024-10-31 22:17:19,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 242 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:19,624 INFO L231 Difference]: Finished difference. Result has 201 places, 194 transitions, 409 flow [2024-10-31 22:17:19,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=201, PETRI_TRANSITIONS=194} [2024-10-31 22:17:19,627 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 3 predicate places. [2024-10-31 22:17:19,627 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 194 transitions, 409 flow [2024-10-31 22:17:19,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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) [2024-10-31 22:17:19,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:19,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:19,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:17:19,629 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:17:19,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash 433727298, now seen corresponding path program 1 times [2024-10-31 22:17:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758001744] [2024-10-31 22:17:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:19,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:19,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758001744] [2024-10-31 22:17:19,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758001744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:19,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:19,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:19,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311743695] [2024-10-31 22:17:19,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:19,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:19,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:19,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 215 [2024-10-31 22:17:19,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2024-10-31 22:17:19,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:19,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 215 [2024-10-31 22:17:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:20,096 INFO L124 PetriNetUnfolderBase]: 170/1602 cut-off events. [2024-10-31 22:17:20,096 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:17:20,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1602 events. 170/1602 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12576 event pairs, 12 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 1920. Up to 189 conditions per place. [2024-10-31 22:17:20,108 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 41 selfloop transitions, 3 changer transitions 0/214 dead transitions. [2024-10-31 22:17:20,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 214 transitions, 540 flow [2024-10-31 22:17:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2024-10-31 22:17:20,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8697674418604651 [2024-10-31 22:17:20,111 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 409 flow. Second operand 3 states and 561 transitions. [2024-10-31 22:17:20,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 214 transitions, 540 flow [2024-10-31 22:17:20,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 214 transitions, 530 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:17:20,120 INFO L231 Difference]: Finished difference. Result has 200 places, 196 transitions, 421 flow [2024-10-31 22:17:20,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=200, PETRI_TRANSITIONS=196} [2024-10-31 22:17:20,122 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 2 predicate places. [2024-10-31 22:17:20,123 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 196 transitions, 421 flow [2024-10-31 22:17:20,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2024-10-31 22:17:20,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:20,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:20,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:17:20,124 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:17:20,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1317806164, now seen corresponding path program 1 times [2024-10-31 22:17:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:20,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091246686] [2024-10-31 22:17:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091246686] [2024-10-31 22:17:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091246686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:20,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549335610] [2024-10-31 22:17:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:20,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:20,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:20,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:20,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:17:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:20,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:17:20,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:17:20,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549335610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:20,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:17:20,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431948875] [2024-10-31 22:17:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:20,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:20,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 215 [2024-10-31 22:17:20,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 196 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2024-10-31 22:17:20,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:20,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 215 [2024-10-31 22:17:20,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:20,969 INFO L124 PetriNetUnfolderBase]: 278/2141 cut-off events. [2024-10-31 22:17:20,970 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-31 22:17:20,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 2141 events. 278/2141 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18016 event pairs, 204 based on Foata normal form. 0/1878 useless extension candidates. Maximal degree in co-relation 2739. Up to 497 conditions per place. [2024-10-31 22:17:20,983 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 39 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2024-10-31 22:17:20,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 211 transitions, 543 flow [2024-10-31 22:17:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:20,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2024-10-31 22:17:20,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496124031007752 [2024-10-31 22:17:20,986 INFO L175 Difference]: Start difference. First operand has 200 places, 196 transitions, 421 flow. Second operand 3 states and 548 transitions. [2024-10-31 22:17:20,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 211 transitions, 543 flow [2024-10-31 22:17:20,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 211 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:17:20,995 INFO L231 Difference]: Finished difference. Result has 202 places, 199 transitions, 451 flow [2024-10-31 22:17:20,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=202, PETRI_TRANSITIONS=199} [2024-10-31 22:17:20,997 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 4 predicate places. [2024-10-31 22:17:20,998 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 199 transitions, 451 flow [2024-10-31 22:17:20,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2024-10-31 22:17:20,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:20,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:21,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:17:21,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:21,201 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:17:21,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:21,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1447479707, now seen corresponding path program 1 times [2024-10-31 22:17:21,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431844485] [2024-10-31 22:17:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:21,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:17:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:17:21,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:17:21,309 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:17:21,312 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-31 22:17:21,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-31 22:17:21,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-31 22:17:21,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-31 22:17:21,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-31 22:17:21,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-31 22:17:21,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-31 22:17:21,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-31 22:17:21,318 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-31 22:17:21,318 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-31 22:17:21,318 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-31 22:17:21,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-31 22:17:21,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-31 22:17:21,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-31 22:17:21,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-31 22:17:21,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-31 22:17:21,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-31 22:17:21,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-31 22:17:21,321 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-31 22:17:21,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-31 22:17:21,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-31 22:17:21,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-31 22:17:21,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-31 22:17:21,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:17:21,326 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:17:21,329 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:17:21,329 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:17:21,420 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:17:21,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 321 transitions, 658 flow [2024-10-31 22:17:21,554 INFO L124 PetriNetUnfolderBase]: 48/487 cut-off events. [2024-10-31 22:17:21,554 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:17:21,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 487 events. 48/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2066 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2024-10-31 22:17:21,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 321 transitions, 658 flow [2024-10-31 22:17:21,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 321 transitions, 658 flow [2024-10-31 22:17:21,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:17:21,573 INFO L333 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, 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;@3d5cd432, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:17:21,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-10-31 22:17:21,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:17:21,580 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-31 22:17:21,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:17:21,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:21,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:21,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-31 22:17:21,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1489206158, now seen corresponding path program 1 times [2024-10-31 22:17:21,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20437800] [2024-10-31 22:17:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:21,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:21,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20437800] [2024-10-31 22:17:21,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20437800] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:21,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:17:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313182037] [2024-10-31 22:17:21,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:21,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:21,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 321 [2024-10-31 22:17:21,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 321 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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) [2024-10-31 22:17:21,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:21,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 321 [2024-10-31 22:17:21,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:25,083 INFO L124 PetriNetUnfolderBase]: 3460/16760 cut-off events. [2024-10-31 22:17:25,083 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-31 22:17:25,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22311 conditions, 16760 events. 3460/16760 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 209113 event pairs, 1584 based on Foata normal form. 3090/18209 useless extension candidates. Maximal degree in co-relation 1883. Up to 5465 conditions per place. [2024-10-31 22:17:25,209 INFO L140 encePairwiseOnDemand]: 288/321 looper letters, 51 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2024-10-31 22:17:25,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 302 transitions, 726 flow [2024-10-31 22:17:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2024-10-31 22:17:25,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8795430944963655 [2024-10-31 22:17:25,211 INFO L175 Difference]: Start difference. First operand has 292 places, 321 transitions, 658 flow. Second operand 3 states and 847 transitions. [2024-10-31 22:17:25,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 302 transitions, 726 flow [2024-10-31 22:17:25,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 302 transitions, 726 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:17:25,219 INFO L231 Difference]: Finished difference. Result has 293 places, 290 transitions, 606 flow [2024-10-31 22:17:25,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=293, PETRI_TRANSITIONS=290} [2024-10-31 22:17:25,220 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 1 predicate places. [2024-10-31 22:17:25,220 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 290 transitions, 606 flow [2024-10-31 22:17:25,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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) [2024-10-31 22:17:25,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:25,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:25,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:17:25,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-31 22:17:25,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1915244397, now seen corresponding path program 1 times [2024-10-31 22:17:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8238292] [2024-10-31 22:17:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:25,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8238292] [2024-10-31 22:17:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8238292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:25,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:17:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412831980] [2024-10-31 22:17:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:25,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:17:25,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:17:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:25,840 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 321 [2024-10-31 22:17:25,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 290 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 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) [2024-10-31 22:17:25,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:25,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 321 [2024-10-31 22:17:25,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:31,090 INFO L124 PetriNetUnfolderBase]: 6951/28147 cut-off events. [2024-10-31 22:17:31,090 INFO L125 PetriNetUnfolderBase]: For 345/384 co-relation queries the response was YES. [2024-10-31 22:17:31,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39106 conditions, 28147 events. 6951/28147 cut-off events. For 345/384 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 368839 event pairs, 3215 based on Foata normal form. 0/25277 useless extension candidates. Maximal degree in co-relation 38888. Up to 7803 conditions per place. [2024-10-31 22:17:31,345 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 142 selfloop transitions, 6 changer transitions 0/385 dead transitions. [2024-10-31 22:17:31,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 385 transitions, 1092 flow [2024-10-31 22:17:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:17:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:17:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1576 transitions. [2024-10-31 22:17:31,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.818276220145379 [2024-10-31 22:17:31,352 INFO L175 Difference]: Start difference. First operand has 293 places, 290 transitions, 606 flow. Second operand 6 states and 1576 transitions. [2024-10-31 22:17:31,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 385 transitions, 1092 flow [2024-10-31 22:17:31,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 385 transitions, 1090 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:17:31,367 INFO L231 Difference]: Finished difference. Result has 296 places, 289 transitions, 614 flow [2024-10-31 22:17:31,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=289} [2024-10-31 22:17:31,370 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 4 predicate places. [2024-10-31 22:17:31,370 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 289 transitions, 614 flow [2024-10-31 22:17:31,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 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) [2024-10-31 22:17:31,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:31,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:31,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:17:31,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-31 22:17:31,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 62047434, now seen corresponding path program 1 times [2024-10-31 22:17:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220736020] [2024-10-31 22:17:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:31,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:31,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220736020] [2024-10-31 22:17:31,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220736020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:31,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:17:31,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:17:31,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529212732] [2024-10-31 22:17:31,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:31,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:17:31,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 321 [2024-10-31 22:17:31,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 289 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2024-10-31 22:17:31,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:31,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 321 [2024-10-31 22:17:31,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:17:36,795 INFO L124 PetriNetUnfolderBase]: 6242/30828 cut-off events. [2024-10-31 22:17:36,795 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-31 22:17:36,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40778 conditions, 30828 events. 6242/30828 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 425243 event pairs, 1648 based on Foata normal form. 0/27517 useless extension candidates. Maximal degree in co-relation 38700. Up to 5556 conditions per place. [2024-10-31 22:17:37,064 INFO L140 encePairwiseOnDemand]: 314/321 looper letters, 74 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2024-10-31 22:17:37,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 327 transitions, 859 flow [2024-10-31 22:17:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:17:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:17:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2024-10-31 22:17:37,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2024-10-31 22:17:37,068 INFO L175 Difference]: Start difference. First operand has 296 places, 289 transitions, 614 flow. Second operand 3 states and 828 transitions. [2024-10-31 22:17:37,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 327 transitions, 859 flow [2024-10-31 22:17:37,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 327 transitions, 847 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:17:37,078 INFO L231 Difference]: Finished difference. Result has 295 places, 294 transitions, 646 flow [2024-10-31 22:17:37,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=295, PETRI_TRANSITIONS=294} [2024-10-31 22:17:37,079 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 3 predicate places. [2024-10-31 22:17:37,080 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 294 transitions, 646 flow [2024-10-31 22:17:37,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2024-10-31 22:17:37,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:17:37,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:17:37,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:17:37,082 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-31 22:17:37,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:17:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1360856883, now seen corresponding path program 1 times [2024-10-31 22:17:37,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:17:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116861076] [2024-10-31 22:17:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:17:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:17:37,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:17:37,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116861076] [2024-10-31 22:17:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116861076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:17:37,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21324876] [2024-10-31 22:17:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:17:37,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:17:37,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:17:37,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:17:37,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f80276a-23bd-4dd2-a391-9254b473154d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:17:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:17:37,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:17:37,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:17:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:17:37,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:17:37,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21324876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:17:37,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:17:37,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-31 22:17:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067740319] [2024-10-31 22:17:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:17:37,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:17:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:17:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:17:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:17:37,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 321 [2024-10-31 22:17:37,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 294 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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) [2024-10-31 22:17:37,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:17:37,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 321 [2024-10-31 22:17:37,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand