./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b 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_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:08,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:08,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:19:08,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:08,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:08,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:08,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:08,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:08,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:08,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:08,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:08,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:08,381 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:08,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:08,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:19:08,383 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:08,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:08,384 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:08,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:08,385 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:19:08,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:08,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:19:08,387 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:19:08,388 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:19:08,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:08,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:19:08,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:08,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:08,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:08,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:08,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:08,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:08,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:08,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:19:08,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:08,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:08,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:08,395 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:19:08,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:08,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:08,397 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:08,397 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_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2023-11-06 22:19:08,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:08,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:08,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:08,726 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:08,726 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:08,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-06 22:19:11,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:12,298 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:12,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-11-06 22:19:12,317 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/data/3d65b427a/cc1ca9bf3daf4d14aea18e65cbafbe02/FLAG82ae8eb11 [2023-11-06 22:19:12,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/data/3d65b427a/cc1ca9bf3daf4d14aea18e65cbafbe02 [2023-11-06 22:19:12,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:12,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:12,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:12,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:12,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:12,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:12" (1/1) ... [2023-11-06 22:19:12,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab203ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:12, skipping insertion in model container [2023-11-06 22:19:12,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:12" (1/1) ... [2023-11-06 22:19:12,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:13,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:13,053 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:13,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:13,186 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:19:13,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13 WrapperNode [2023-11-06 22:19:13,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:13,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:13,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:19:13,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:19:13,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,265 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 266 [2023-11-06 22:19:13,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:13,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:19:13,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:19:13,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:19:13,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:19:13,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:19:13,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:19:13,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:19:13,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (1/1) ... [2023-11-06 22:19:13,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:13,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:13,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:19:13,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:19:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:19:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:19:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:19:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:19:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:19:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:19:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:19:13,452 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:19:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:19:13,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:19:13,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:19:13,455 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:19:13,631 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:19:13,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:19:14,180 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:19:14,192 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:19:14,192 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-11-06 22:19:14,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:14 BoogieIcfgContainer [2023-11-06 22:19:14,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:19:14,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:19:14,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:19:14,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:19:14,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:12" (1/3) ... [2023-11-06 22:19:14,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca53d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:14, skipping insertion in model container [2023-11-06 22:19:14,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:13" (2/3) ... [2023-11-06 22:19:14,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca53d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:14, skipping insertion in model container [2023-11-06 22:19:14,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:14" (3/3) ... [2023-11-06 22:19:14,205 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-11-06 22:19:14,214 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:19:14,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:19:14,223 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-06 22:19:14,224 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:19:14,328 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:19:14,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 283 transitions, 573 flow [2023-11-06 22:19:14,567 INFO L124 PetriNetUnfolderBase]: 52/414 cut-off events. [2023-11-06 22:19:14,568 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:19:14,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 414 events. 52/414 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1821 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2023-11-06 22:19:14,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 283 transitions, 573 flow [2023-11-06 22:19:14,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 283 transitions, 573 flow [2023-11-06 22:19:14,607 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:19:14,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 283 transitions, 573 flow [2023-11-06 22:19:14,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 283 transitions, 573 flow [2023-11-06 22:19:14,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 283 transitions, 573 flow [2023-11-06 22:19:14,827 INFO L124 PetriNetUnfolderBase]: 52/414 cut-off events. [2023-11-06 22:19:14,827 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:19:14,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 414 events. 52/414 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1821 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2023-11-06 22:19:14,891 INFO L119 LiptonReduction]: Number of co-enabled transitions 30140 [2023-11-06 22:19:18,867 INFO L134 LiptonReduction]: Checked pairs total: 108424 [2023-11-06 22:19:18,868 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-11-06 22:19:18,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:18,890 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d9aee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:18,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:19:18,896 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:19:18,897 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-06 22:19:18,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:19:18,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:18,898 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:19:18,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:19:18,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 95307048, now seen corresponding path program 1 times [2023-11-06 22:19:18,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472787138] [2023-11-06 22:19:18,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:19,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:19,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472787138] [2023-11-06 22:19:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472787138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:19,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:19,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:19,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018755812] [2023-11-06 22:19:19,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:19,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:19,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 472 [2023-11-06 22:19:19,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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) [2023-11-06 22:19:19,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:19,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 472 [2023-11-06 22:19:19,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:19,704 INFO L124 PetriNetUnfolderBase]: 483/1714 cut-off events. [2023-11-06 22:19:19,705 INFO L125 PetriNetUnfolderBase]: For 8/13 co-relation queries the response was YES. [2023-11-06 22:19:19,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1714 events. 483/1714 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11745 event pairs, 396 based on Foata normal form. 188/1726 useless extension candidates. Maximal degree in co-relation 2521. Up to 903 conditions per place. [2023-11-06 22:19:19,717 INFO L140 encePairwiseOnDemand]: 447/472 looper letters, 47 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-06 22:19:19,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 337 flow [2023-11-06 22:19:19,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:19:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-11-06 22:19:19,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2023-11-06 22:19:19,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-11-06 22:19:19,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-11-06 22:19:19,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:19,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-11-06 22:19:19,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-06 22:19:19,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 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) [2023-11-06 22:19:19,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 472.0) internal successors, (1888), 4 states have internal predecessors, (1888), 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) [2023-11-06 22:19:19,772 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 281 flow. Second operand 3 states and 804 transitions. [2023-11-06 22:19:19,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 337 flow [2023-11-06 22:19:19,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 116 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:19,780 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 249 flow [2023-11-06 22:19:19,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2023-11-06 22:19:19,787 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-11-06 22:19:19,788 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 249 flow [2023-11-06 22:19:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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) [2023-11-06 22:19:19,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:19,789 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:19,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:19:19,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:19:19,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:19,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1899819018, now seen corresponding path program 1 times [2023-11-06 22:19:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:19,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896461433] [2023-11-06 22:19:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896461433] [2023-11-06 22:19:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896461433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517362761] [2023-11-06 22:19:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:19,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:19,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:19,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:19:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:20,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:19:20,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:20,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:20,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517362761] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:20,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:19:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:19:20,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951988844] [2023-11-06 22:19:20,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:20,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:20,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:20,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 472 [2023-11-06 22:19:20,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 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) [2023-11-06 22:19:20,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:20,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 472 [2023-11-06 22:19:20,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:20,632 INFO L124 PetriNetUnfolderBase]: 483/1717 cut-off events. [2023-11-06 22:19:20,632 INFO L125 PetriNetUnfolderBase]: For 8/13 co-relation queries the response was YES. [2023-11-06 22:19:20,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 1717 events. 483/1717 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11765 event pairs, 396 based on Foata normal form. 0/1541 useless extension candidates. Maximal degree in co-relation 2627. Up to 903 conditions per place. [2023-11-06 22:19:20,647 INFO L140 encePairwiseOnDemand]: 469/472 looper letters, 47 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2023-11-06 22:19:20,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 365 flow [2023-11-06 22:19:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:19:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1513 transitions. [2023-11-06 22:19:20,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342514124293786 [2023-11-06 22:19:20,658 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1513 transitions. [2023-11-06 22:19:20,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1513 transitions. [2023-11-06 22:19:20,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:20,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1513 transitions. [2023-11-06 22:19:20,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 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) [2023-11-06 22:19:20,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 472.0) internal successors, (3304), 7 states have internal predecessors, (3304), 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) [2023-11-06 22:19:20,714 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 472.0) internal successors, (3304), 7 states have internal predecessors, (3304), 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) [2023-11-06 22:19:20,715 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 249 flow. Second operand 6 states and 1513 transitions. [2023-11-06 22:19:20,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 365 flow [2023-11-06 22:19:20,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 119 transitions, 361 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:19:20,723 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 281 flow [2023-11-06 22:19:20,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2023-11-06 22:19:20,725 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2023-11-06 22:19:20,726 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 281 flow [2023-11-06 22:19:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 244.57142857142858) internal successors, (1712), 7 states have internal predecessors, (1712), 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) [2023-11-06 22:19:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-06 22:19:20,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:19:20,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:20,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:19:20,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash 166824104, now seen corresponding path program 2 times [2023-11-06 22:19:20,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:20,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952506588] [2023-11-06 22:19:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:20,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952506588] [2023-11-06 22:19:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952506588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804506152] [2023-11-06 22:19:21,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:19:21,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:21,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:21,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:21,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:19:21,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:19:21,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:19:21,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:19:21,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:21,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:21,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804506152] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:21,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:19:21,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:19:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26492798] [2023-11-06 22:19:21,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:21,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:19:21,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:21,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:19:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:19:21,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 472 [2023-11-06 22:19:21,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 281 flow. Second operand has 13 states, 13 states have (on average 244.30769230769232) internal successors, (3176), 13 states have internal predecessors, (3176), 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) [2023-11-06 22:19:21,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:21,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 472 [2023-11-06 22:19:21,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:21,814 INFO L124 PetriNetUnfolderBase]: 483/1723 cut-off events. [2023-11-06 22:19:21,814 INFO L125 PetriNetUnfolderBase]: For 28/33 co-relation queries the response was YES. [2023-11-06 22:19:21,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1723 events. 483/1723 cut-off events. For 28/33 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11757 event pairs, 396 based on Foata normal form. 6/1554 useless extension candidates. Maximal degree in co-relation 2618. Up to 903 conditions per place. [2023-11-06 22:19:21,827 INFO L140 encePairwiseOnDemand]: 469/472 looper letters, 47 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2023-11-06 22:19:21,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 433 flow [2023-11-06 22:19:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:19:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:19:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2980 transitions. [2023-11-06 22:19:21,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261299435028248 [2023-11-06 22:19:21,840 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2980 transitions. [2023-11-06 22:19:21,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2980 transitions. [2023-11-06 22:19:21,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:21,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2980 transitions. [2023-11-06 22:19:21,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 248.33333333333334) internal successors, (2980), 12 states have internal predecessors, (2980), 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) [2023-11-06 22:19:21,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 472.0) internal successors, (6136), 13 states have internal predecessors, (6136), 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) [2023-11-06 22:19:21,874 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 472.0) internal successors, (6136), 13 states have internal predecessors, (6136), 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) [2023-11-06 22:19:21,875 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 281 flow. Second operand 12 states and 2980 transitions. [2023-11-06 22:19:21,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 433 flow [2023-11-06 22:19:21,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 125 transitions, 419 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:19:21,881 INFO L231 Difference]: Finished difference. Result has 138 places, 125 transitions, 351 flow [2023-11-06 22:19:21,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=472, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=351, PETRI_PLACES=138, PETRI_TRANSITIONS=125} [2023-11-06 22:19:21,883 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-11-06 22:19:21,883 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 125 transitions, 351 flow [2023-11-06 22:19:21,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 244.30769230769232) internal successors, (3176), 13 states have internal predecessors, (3176), 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) [2023-11-06 22:19:21,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:21,886 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-06 22:19:21,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:22,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:22,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-06 22:19:22,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1667933672, now seen corresponding path program 3 times [2023-11-06 22:19:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:22,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730706539] [2023-11-06 22:19:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:22,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:22,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:19:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:22,239 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:19:22,240 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:19:22,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:19:22,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-06 22:19:22,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-06 22:19:22,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-06 22:19:22,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-06 22:19:22,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-06 22:19:22,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-06 22:19:22,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-06 22:19:22,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-06 22:19:22,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-06 22:19:22,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-06 22:19:22,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-06 22:19:22,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-06 22:19:22,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-06 22:19:22,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-06 22:19:22,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-06 22:19:22,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-06 22:19:22,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:19:22,253 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-06 22:19:22,258 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:19:22,258 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:19:22,347 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:19:22,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 395 transitions, 806 flow [2023-11-06 22:19:22,523 INFO L124 PetriNetUnfolderBase]: 87/689 cut-off events. [2023-11-06 22:19:22,523 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:19:22,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 689 events. 87/689 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3775 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 416. Up to 12 conditions per place. [2023-11-06 22:19:22,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 395 transitions, 806 flow [2023-11-06 22:19:22,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 395 transitions, 806 flow [2023-11-06 22:19:22,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:19:22,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 395 transitions, 806 flow [2023-11-06 22:19:22,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 395 transitions, 806 flow [2023-11-06 22:19:22,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 395 transitions, 806 flow [2023-11-06 22:19:22,738 INFO L124 PetriNetUnfolderBase]: 87/689 cut-off events. [2023-11-06 22:19:22,738 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:19:22,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 689 events. 87/689 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3775 event pairs, 0 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 416. Up to 12 conditions per place. [2023-11-06 22:19:22,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 86900 [2023-11-06 22:19:27,780 INFO L134 LiptonReduction]: Checked pairs total: 315053 [2023-11-06 22:19:27,780 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-11-06 22:19:27,782 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:27,785 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d9aee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:27,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:19:27,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:19:27,806 INFO L124 PetriNetUnfolderBase]: 13/65 cut-off events. [2023-11-06 22:19:27,806 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:19:27,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:27,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:27,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:19:27,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:27,807 INFO L85 PathProgramCache]: Analyzing trace with hash -363413164, now seen corresponding path program 1 times [2023-11-06 22:19:27,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:27,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89691606] [2023-11-06 22:19:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89691606] [2023-11-06 22:19:27,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89691606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:27,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:27,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485389022] [2023-11-06 22:19:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:27,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:27,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:27,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:27,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 648 [2023-11-06 22:19:27,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 201 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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) [2023-11-06 22:19:27,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:27,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 648 [2023-11-06 22:19:27,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:34,048 INFO L124 PetriNetUnfolderBase]: 18367/41842 cut-off events. [2023-11-06 22:19:34,048 INFO L125 PetriNetUnfolderBase]: For 192/264 co-relation queries the response was YES. [2023-11-06 22:19:34,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67986 conditions, 41842 events. 18367/41842 cut-off events. For 192/264 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 442190 event pairs, 15876 based on Foata normal form. 5449/42598 useless extension candidates. Maximal degree in co-relation 30382. Up to 26041 conditions per place. [2023-11-06 22:19:34,440 INFO L140 encePairwiseOnDemand]: 612/648 looper letters, 68 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-11-06 22:19:34,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 169 transitions, 494 flow [2023-11-06 22:19:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:19:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1124 transitions. [2023-11-06 22:19:34,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781893004115226 [2023-11-06 22:19:34,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1124 transitions. [2023-11-06 22:19:34,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1124 transitions. [2023-11-06 22:19:34,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:34,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1124 transitions. [2023-11-06 22:19:34,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 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) [2023-11-06 22:19:34,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-06 22:19:34,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-06 22:19:34,459 INFO L175 Difference]: Start difference. First operand has 164 places, 201 transitions, 418 flow. Second operand 3 states and 1124 transitions. [2023-11-06 22:19:34,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 169 transitions, 494 flow [2023-11-06 22:19:34,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 169 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:19:34,467 INFO L231 Difference]: Finished difference. Result has 167 places, 169 transitions, 364 flow [2023-11-06 22:19:34,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=167, PETRI_TRANSITIONS=169} [2023-11-06 22:19:34,470 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-11-06 22:19:34,470 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 169 transitions, 364 flow [2023-11-06 22:19:34,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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) [2023-11-06 22:19:34,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:34,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:34,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:19:34,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:19:34,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash -315798838, now seen corresponding path program 1 times [2023-11-06 22:19:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:34,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672561707] [2023-11-06 22:19:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:34,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672561707] [2023-11-06 22:19:34,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672561707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:34,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265019509] [2023-11-06 22:19:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:34,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:34,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:34,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:19:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:34,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:19:34,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:19:34,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:19:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265019509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:19:34,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-06 22:19:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404954733] [2023-11-06 22:19:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:34,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:34,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 648 [2023-11-06 22:19:34,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 169 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-06 22:19:34,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:34,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 648 [2023-11-06 22:19:34,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:39,483 INFO L124 PetriNetUnfolderBase]: 17982/41292 cut-off events. [2023-11-06 22:19:39,484 INFO L125 PetriNetUnfolderBase]: For 298/438 co-relation queries the response was YES. [2023-11-06 22:19:39,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67424 conditions, 41292 events. 17982/41292 cut-off events. For 298/438 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 441147 event pairs, 7596 based on Foata normal form. 0/36718 useless extension candidates. Maximal degree in co-relation 67411. Up to 26001 conditions per place. [2023-11-06 22:19:39,823 INFO L140 encePairwiseOnDemand]: 645/648 looper letters, 89 selfloop transitions, 2 changer transitions 0/190 dead transitions. [2023-11-06 22:19:39,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 190 transitions, 588 flow [2023-11-06 22:19:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:19:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1111 transitions. [2023-11-06 22:19:39,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5715020576131687 [2023-11-06 22:19:39,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1111 transitions. [2023-11-06 22:19:39,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1111 transitions. [2023-11-06 22:19:39,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:39,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1111 transitions. [2023-11-06 22:19:39,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 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) [2023-11-06 22:19:39,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-06 22:19:39,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 648.0) internal successors, (2592), 4 states have internal predecessors, (2592), 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) [2023-11-06 22:19:39,839 INFO L175 Difference]: Start difference. First operand has 167 places, 169 transitions, 364 flow. Second operand 3 states and 1111 transitions. [2023-11-06 22:19:39,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 190 transitions, 588 flow [2023-11-06 22:19:39,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 190 transitions, 584 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:19:39,845 INFO L231 Difference]: Finished difference. Result has 169 places, 170 transitions, 372 flow [2023-11-06 22:19:39,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=169, PETRI_TRANSITIONS=170} [2023-11-06 22:19:39,847 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-11-06 22:19:39,847 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 170 transitions, 372 flow [2023-11-06 22:19:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.0) internal successors, (1026), 3 states have internal predecessors, (1026), 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) [2023-11-06 22:19:39,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:39,848 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:39,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:40,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:40,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:19:40,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1339499845, now seen corresponding path program 1 times [2023-11-06 22:19:40,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:40,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378815522] [2023-11-06 22:19:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:40,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378815522] [2023-11-06 22:19:40,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378815522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:40,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138919856] [2023-11-06 22:19:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:40,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:40,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:40,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:40,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:19:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:40,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:19:40,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:40,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138919856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:40,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:19:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:19:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122318136] [2023-11-06 22:19:40,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:40,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:40,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:40,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 648 [2023-11-06 22:19:40,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 170 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 340.7142857142857) internal successors, (2385), 7 states have internal predecessors, (2385), 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) [2023-11-06 22:19:40,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:40,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 648 [2023-11-06 22:19:40,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:44,988 INFO L124 PetriNetUnfolderBase]: 18400/42158 cut-off events. [2023-11-06 22:19:44,988 INFO L125 PetriNetUnfolderBase]: For 1018/1096 co-relation queries the response was YES. [2023-11-06 22:19:45,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69075 conditions, 42158 events. 18400/42158 cut-off events. For 1018/1096 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 447771 event pairs, 15876 based on Foata normal form. 3/37734 useless extension candidates. Maximal degree in co-relation 69047. Up to 26022 conditions per place. [2023-11-06 22:19:45,275 INFO L140 encePairwiseOnDemand]: 645/648 looper letters, 69 selfloop transitions, 5 changer transitions 0/173 dead transitions. [2023-11-06 22:19:45,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 532 flow [2023-11-06 22:19:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:19:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:19:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2110 transitions. [2023-11-06 22:19:45,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426954732510288 [2023-11-06 22:19:45,295 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2110 transitions. [2023-11-06 22:19:45,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2110 transitions. [2023-11-06 22:19:45,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:45,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2110 transitions. [2023-11-06 22:19:45,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.6666666666667) internal successors, (2110), 6 states have internal predecessors, (2110), 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) [2023-11-06 22:19:45,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 648.0) internal successors, (4536), 7 states have internal predecessors, (4536), 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) [2023-11-06 22:19:45,325 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 648.0) internal successors, (4536), 7 states have internal predecessors, (4536), 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) [2023-11-06 22:19:45,325 INFO L175 Difference]: Start difference. First operand has 169 places, 170 transitions, 372 flow. Second operand 6 states and 2110 transitions. [2023-11-06 22:19:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 532 flow [2023-11-06 22:19:45,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 173 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:19:45,332 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 406 flow [2023-11-06 22:19:45,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2023-11-06 22:19:45,334 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-11-06 22:19:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 406 flow [2023-11-06 22:19:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 340.7142857142857) internal successors, (2385), 7 states have internal predecessors, (2385), 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) [2023-11-06 22:19:45,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:45,337 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:19:45,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:45,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:45,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:19:45,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1327927601, now seen corresponding path program 2 times [2023-11-06 22:19:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:45,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146883425] [2023-11-06 22:19:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:45,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146883425] [2023-11-06 22:19:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146883425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:19:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925721856] [2023-11-06 22:19:45,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:19:45,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:45,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:45,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:19:45,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:19:45,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:19:45,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:19:45,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:19:45,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:19:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:45,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:19:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925721856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:19:45,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:19:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:19:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849760316] [2023-11-06 22:19:45,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:19:45,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:19:45,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:45,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:19:45,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:19:45,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 648 [2023-11-06 22:19:45,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 406 flow. Second operand has 13 states, 13 states have (on average 340.38461538461536) internal successors, (4425), 13 states have internal predecessors, (4425), 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) [2023-11-06 22:19:45,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:45,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 648 [2023-11-06 22:19:45,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:19:51,469 INFO L124 PetriNetUnfolderBase]: 18400/42164 cut-off events. [2023-11-06 22:19:51,470 INFO L125 PetriNetUnfolderBase]: For 1052/1130 co-relation queries the response was YES. [2023-11-06 22:19:51,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69095 conditions, 42164 events. 18400/42164 cut-off events. For 1052/1130 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 447372 event pairs, 15876 based on Foata normal form. 6/37743 useless extension candidates. Maximal degree in co-relation 69035. Up to 26022 conditions per place. [2023-11-06 22:19:51,757 INFO L140 encePairwiseOnDemand]: 645/648 looper letters, 69 selfloop transitions, 11 changer transitions 0/179 dead transitions. [2023-11-06 22:19:51,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 179 transitions, 602 flow [2023-11-06 22:19:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:19:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:19:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4153 transitions. [2023-11-06 22:19:51,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340792181069959 [2023-11-06 22:19:51,773 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4153 transitions. [2023-11-06 22:19:51,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4153 transitions. [2023-11-06 22:19:51,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:19:51,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4153 transitions. [2023-11-06 22:19:51,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 346.0833333333333) internal successors, (4153), 12 states have internal predecessors, (4153), 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) [2023-11-06 22:19:51,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 648.0) internal successors, (8424), 13 states have internal predecessors, (8424), 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) [2023-11-06 22:19:51,825 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 648.0) internal successors, (8424), 13 states have internal predecessors, (8424), 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) [2023-11-06 22:19:51,825 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 406 flow. Second operand 12 states and 4153 transitions. [2023-11-06 22:19:51,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 179 transitions, 602 flow [2023-11-06 22:19:51,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 179 transitions, 588 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-06 22:19:51,832 INFO L231 Difference]: Finished difference. Result has 192 places, 179 transitions, 476 flow [2023-11-06 22:19:51,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=648, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=476, PETRI_PLACES=192, PETRI_TRANSITIONS=179} [2023-11-06 22:19:51,834 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2023-11-06 22:19:51,834 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 179 transitions, 476 flow [2023-11-06 22:19:51,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 340.38461538461536) internal successors, (4425), 13 states have internal predecessors, (4425), 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) [2023-11-06 22:19:51,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:51,836 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:19:51,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:19:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a2c0c69-52c8-46de-a3da-43276433dbf2/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:19:52,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-06 22:19:52,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash -58148081, now seen corresponding path program 3 times [2023-11-06 22:19:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:52,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660717456] [2023-11-06 22:19:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:52,101 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:19:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:19:52,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:19:52,145 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:19:52,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-06 22:19:52,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-06 22:19:52,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-06 22:19:52,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-06 22:19:52,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-06 22:19:52,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-06 22:19:52,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-06 22:19:52,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-06 22:19:52,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-06 22:19:52,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-06 22:19:52,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-06 22:19:52,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-06 22:19:52,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-06 22:19:52,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-06 22:19:52,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-06 22:19:52,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-06 22:19:52,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-06 22:19:52,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-06 22:19:52,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-06 22:19:52,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-06 22:19:52,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-06 22:19:52,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-06 22:19:52,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:19:52,150 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-06 22:19:52,151 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:19:52,151 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:19:52,227 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:19:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 507 transitions, 1041 flow [2023-11-06 22:19:52,433 INFO L124 PetriNetUnfolderBase]: 127/1011 cut-off events. [2023-11-06 22:19:52,433 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:19:52,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 1011 events. 127/1011 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6097 event pairs, 1 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 697. Up to 16 conditions per place. [2023-11-06 22:19:52,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 447 places, 507 transitions, 1041 flow [2023-11-06 22:19:52,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 507 transitions, 1041 flow [2023-11-06 22:19:52,463 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:19:52,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 507 transitions, 1041 flow [2023-11-06 22:19:52,464 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 507 transitions, 1041 flow [2023-11-06 22:19:52,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 507 transitions, 1041 flow [2023-11-06 22:19:52,725 INFO L124 PetriNetUnfolderBase]: 127/1011 cut-off events. [2023-11-06 22:19:52,725 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:19:52,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 1011 events. 127/1011 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6097 event pairs, 1 based on Foata normal form. 0/837 useless extension candidates. Maximal degree in co-relation 697. Up to 16 conditions per place. [2023-11-06 22:19:53,044 INFO L119 LiptonReduction]: Number of co-enabled transitions 167640 [2023-11-06 22:19:58,555 INFO L134 LiptonReduction]: Checked pairs total: 617667 [2023-11-06 22:19:58,555 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-11-06 22:19:58,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:58,559 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d9aee3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:58,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-06 22:19:58,565 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:19:58,565 INFO L124 PetriNetUnfolderBase]: 13/65 cut-off events. [2023-11-06 22:19:58,565 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:19:58,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:19:58,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:19:58,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-06 22:19:58,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2098307810, now seen corresponding path program 1 times [2023-11-06 22:19:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:58,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090138366] [2023-11-06 22:19:58,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:58,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:19:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090138366] [2023-11-06 22:19:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090138366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:58,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250185771] [2023-11-06 22:19:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:58,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:58,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 826 [2023-11-06 22:19:58,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 262 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 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) [2023-11-06 22:19:58,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:19:58,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 826 [2023-11-06 22:19:58,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand