./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:06:47,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:06:47,380 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 04:06:47,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:06:47,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:06:47,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:06:47,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:06:47,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:06:47,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:06:47,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:06:47,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:06:47,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:06:47,414 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:06:47,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:06:47,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:06:47,415 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:06:47,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:06:47,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:06:47,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:06:47,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:06:47,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:06:47,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:06:47,419 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 04:06:47,419 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:06:47,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:06:47,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:06:47,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:06:47,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:06:47,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:06:47,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:06:47,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:06:47,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:06:47,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:06:47,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:06:47,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:06:47,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:06:47,423 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:06:47,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:06:47,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:06:47,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:06:47,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:06:47,424 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_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2023-11-29 04:06:47,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:06:47,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:06:47,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:06:47,700 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:06:47,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:06:47,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-29 04:06:50,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:06:50,706 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:06:50,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2023-11-29 04:06:50,724 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/data/5bcbd3f01/69a600113e984a75b2d12bf5bba998c7/FLAG2b2a34edc [2023-11-29 04:06:50,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/data/5bcbd3f01/69a600113e984a75b2d12bf5bba998c7 [2023-11-29 04:06:50,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:06:50,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:06:50,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:06:50,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:06:50,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:06:50,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:06:50" (1/1) ... [2023-11-29 04:06:50,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb59669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:50, skipping insertion in model container [2023-11-29 04:06:50,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:06:50" (1/1) ... [2023-11-29 04:06:50,811 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:06:51,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:06:51,299 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:06:51,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:06:51,410 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:06:51,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51 WrapperNode [2023-11-29 04:06:51,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:06:51,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:06:51,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:06:51,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:06:51,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,475 INFO L138 Inliner]: procedures = 272, calls = 50, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 389 [2023-11-29 04:06:51,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:06:51,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:06:51,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:06:51,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:06:51,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:06:51,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:06:51,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:06:51,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:06:51,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (1/1) ... [2023-11-29 04:06:51,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:06:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:51,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:06:51,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:06:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:06:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 04:06:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 04:06:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 04:06:51,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:06:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:06:51,615 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:06:51,763 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:06:51,765 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:06:52,318 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:06:52,372 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:06:52,373 INFO L309 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-29 04:06:52,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:06:52 BoogieIcfgContainer [2023-11-29 04:06:52,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:06:52,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:06:52,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:06:52,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:06:52,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:06:50" (1/3) ... [2023-11-29 04:06:52,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e5cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:06:52, skipping insertion in model container [2023-11-29 04:06:52,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:06:51" (2/3) ... [2023-11-29 04:06:52,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e5cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:06:52, skipping insertion in model container [2023-11-29 04:06:52,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:06:52" (3/3) ... [2023-11-29 04:06:52,385 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2023-11-29 04:06:52,395 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:06:52,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:06:52,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 04:06:52,408 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:06:52,509 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 04:06:52,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 389 transitions, 785 flow [2023-11-29 04:06:52,736 INFO L124 PetriNetUnfolderBase]: 78/622 cut-off events. [2023-11-29 04:06:52,737 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:06:52,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 622 events. 78/622 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3518 event pairs, 0 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 352. Up to 8 conditions per place. [2023-11-29 04:06:52,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 389 transitions, 785 flow [2023-11-29 04:06:52,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 389 transitions, 785 flow [2023-11-29 04:06:52,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:06:52,773 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21cd10c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:06:52,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 04:06:52,789 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:06:52,789 INFO L124 PetriNetUnfolderBase]: 16/132 cut-off events. [2023-11-29 04:06:52,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 04:06:52,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:06:52,790 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:06:52,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 04:06:52,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1806513136, now seen corresponding path program 1 times [2023-11-29 04:06:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109139635] [2023-11-29 04:06:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:52,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:53,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:53,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109139635] [2023-11-29 04:06:53,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109139635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:53,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:53,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:06:53,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130383760] [2023-11-29 04:06:53,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:06:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:06:53,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:06:53,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 389 [2023-11-29 04:06:53,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 389 transitions, 785 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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) [2023-11-29 04:06:53,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:06:53,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 389 [2023-11-29 04:06:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:06:53,619 INFO L124 PetriNetUnfolderBase]: 181/2312 cut-off events. [2023-11-29 04:06:53,619 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-29 04:06:53,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 2312 events. 181/2312 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19848 event pairs, 136 based on Foata normal form. 404/2517 useless extension candidates. Maximal degree in co-relation 2385. Up to 340 conditions per place. [2023-11-29 04:06:53,637 INFO L140 encePairwiseOnDemand]: 345/389 looper letters, 31 selfloop transitions, 2 changer transitions 0/340 dead transitions. [2023-11-29 04:06:53,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 340 transitions, 753 flow [2023-11-29 04:06:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:06:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:06:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2023-11-29 04:06:53,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.869751499571551 [2023-11-29 04:06:53,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2023-11-29 04:06:53,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2023-11-29 04:06:53,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:06:53,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2023-11-29 04:06:53,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 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) [2023-11-29 04:06:53,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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) [2023-11-29 04:06:53,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 389.0) internal successors, (1556), 4 states have internal predecessors, (1556), 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) [2023-11-29 04:06:53,678 INFO L175 Difference]: Start difference. First operand has 344 places, 389 transitions, 785 flow. Second operand 3 states and 1015 transitions. [2023-11-29 04:06:53,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 340 transitions, 753 flow [2023-11-29 04:06:53,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 340 transitions, 753 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:06:53,693 INFO L231 Difference]: Finished difference. Result has 338 places, 340 transitions, 697 flow [2023-11-29 04:06:53,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=697, PETRI_PLACES=338, PETRI_TRANSITIONS=340} [2023-11-29 04:06:53,699 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, -6 predicate places. [2023-11-29 04:06:53,699 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 340 transitions, 697 flow [2023-11-29 04:06:53,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 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) [2023-11-29 04:06:53,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:06:53,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:06:53,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:06:53,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 04:06:53,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1205446150, now seen corresponding path program 1 times [2023-11-29 04:06:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754415216] [2023-11-29 04:06:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754415216] [2023-11-29 04:06:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754415216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:06:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389527101] [2023-11-29 04:06:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:53,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:53,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:53,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:53,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:06:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:53,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:06:53,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:54,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389527101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:06:54,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:06:54,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 04:06:54,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428239611] [2023-11-29 04:06:54,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:06:54,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:06:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:06:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:06:54,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 389 [2023-11-29 04:06:54,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 340 transitions, 697 flow. Second operand has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 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) [2023-11-29 04:06:54,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:06:54,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 389 [2023-11-29 04:06:54,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:06:54,565 INFO L124 PetriNetUnfolderBase]: 181/2319 cut-off events. [2023-11-29 04:06:54,566 INFO L125 PetriNetUnfolderBase]: For 9/10 co-relation queries the response was YES. [2023-11-29 04:06:54,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 2319 events. 181/2319 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19881 event pairs, 136 based on Foata normal form. 2/2122 useless extension candidates. Maximal degree in co-relation 2649. Up to 340 conditions per place. [2023-11-29 04:06:54,578 INFO L140 encePairwiseOnDemand]: 383/389 looper letters, 35 selfloop transitions, 9 changer transitions 0/348 dead transitions. [2023-11-29 04:06:54,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 348 transitions, 803 flow [2023-11-29 04:06:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:06:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:06:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2836 transitions. [2023-11-29 04:06:54,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8100542702085118 [2023-11-29 04:06:54,586 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2836 transitions. [2023-11-29 04:06:54,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2836 transitions. [2023-11-29 04:06:54,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:06:54,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2836 transitions. [2023-11-29 04:06:54,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 315.1111111111111) internal successors, (2836), 9 states have internal predecessors, (2836), 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) [2023-11-29 04:06:54,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 389.0) internal successors, (3890), 10 states have internal predecessors, (3890), 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) [2023-11-29 04:06:54,606 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 389.0) internal successors, (3890), 10 states have internal predecessors, (3890), 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) [2023-11-29 04:06:54,606 INFO L175 Difference]: Start difference. First operand has 338 places, 340 transitions, 697 flow. Second operand 9 states and 2836 transitions. [2023-11-29 04:06:54,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 348 transitions, 803 flow [2023-11-29 04:06:54,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 348 transitions, 801 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:06:54,613 INFO L231 Difference]: Finished difference. Result has 348 places, 346 transitions, 745 flow [2023-11-29 04:06:54,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=348, PETRI_TRANSITIONS=346} [2023-11-29 04:06:54,615 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, 4 predicate places. [2023-11-29 04:06:54,615 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 346 transitions, 745 flow [2023-11-29 04:06:54,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 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) [2023-11-29 04:06:54,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:06:54,618 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:06:54,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:06:54,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:54,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 04:06:54,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash -228352070, now seen corresponding path program 2 times [2023-11-29 04:06:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:54,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714676579] [2023-11-29 04:06:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:54,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714676579] [2023-11-29 04:06:54,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714676579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:06:54,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147644566] [2023-11-29 04:06:54,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:06:54,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:54,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:54,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:54,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:06:55,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:06:55,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:06:55,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:06:55,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:55,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147644566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:06:55,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:06:55,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 04:06:55,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677173903] [2023-11-29 04:06:55,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:06:55,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:06:55,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:06:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:06:55,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 389 [2023-11-29 04:06:55,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 346 transitions, 745 flow. Second operand has 18 states, 18 states have (on average 311.94444444444446) internal successors, (5615), 18 states have internal predecessors, (5615), 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) [2023-11-29 04:06:55,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:06:55,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 389 [2023-11-29 04:06:55,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:06:55,941 INFO L124 PetriNetUnfolderBase]: 181/2339 cut-off events. [2023-11-29 04:06:55,941 INFO L125 PetriNetUnfolderBase]: For 36/37 co-relation queries the response was YES. [2023-11-29 04:06:55,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 2339 events. 181/2339 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19872 event pairs, 136 based on Foata normal form. 4/2144 useless extension candidates. Maximal degree in co-relation 2627. Up to 340 conditions per place. [2023-11-29 04:06:55,952 INFO L140 encePairwiseOnDemand]: 383/389 looper letters, 39 selfloop transitions, 21 changer transitions 0/364 dead transitions. [2023-11-29 04:06:55,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 364 transitions, 961 flow [2023-11-29 04:06:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:06:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:06:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6574 transitions. [2023-11-29 04:06:55,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8047496633614886 [2023-11-29 04:06:55,971 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6574 transitions. [2023-11-29 04:06:55,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6574 transitions. [2023-11-29 04:06:55,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:06:55,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6574 transitions. [2023-11-29 04:06:55,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 313.04761904761904) internal successors, (6574), 21 states have internal predecessors, (6574), 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) [2023-11-29 04:06:56,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 389.0) internal successors, (8558), 22 states have internal predecessors, (8558), 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) [2023-11-29 04:06:56,015 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 389.0) internal successors, (8558), 22 states have internal predecessors, (8558), 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) [2023-11-29 04:06:56,015 INFO L175 Difference]: Start difference. First operand has 348 places, 346 transitions, 745 flow. Second operand 21 states and 6574 transitions. [2023-11-29 04:06:56,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 364 transitions, 961 flow [2023-11-29 04:06:56,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 364 transitions, 947 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 04:06:56,024 INFO L231 Difference]: Finished difference. Result has 372 places, 359 transitions, 869 flow [2023-11-29 04:06:56,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=869, PETRI_PLACES=372, PETRI_TRANSITIONS=359} [2023-11-29 04:06:56,025 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, 28 predicate places. [2023-11-29 04:06:56,026 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 359 transitions, 869 flow [2023-11-29 04:06:56,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.94444444444446) internal successors, (5615), 18 states have internal predecessors, (5615), 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) [2023-11-29 04:06:56,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:06:56,029 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:06:56,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:06:56,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:56,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 04:06:56,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:56,230 INFO L85 PathProgramCache]: Analyzing trace with hash -88761542, now seen corresponding path program 3 times [2023-11-29 04:06:56,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:56,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446285041] [2023-11-29 04:06:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:56,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:56,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:56,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446285041] [2023-11-29 04:06:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446285041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:06:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610337410] [2023-11-29 04:06:56,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:06:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:56,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:06:56,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:06:56,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:06:56,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 04:06:56,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:06:56,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:06:56,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:06:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:56,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:06:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:06:56,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610337410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:06:56,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:06:56,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 04:06:57,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304414133] [2023-11-29 04:06:57,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:06:57,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:06:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:06:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:06:57,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 389 [2023-11-29 04:06:57,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 359 transitions, 869 flow. Second operand has 23 states, 23 states have (on average 312.04347826086956) internal successors, (7177), 23 states have internal predecessors, (7177), 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) [2023-11-29 04:06:57,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:06:57,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 389 [2023-11-29 04:06:57,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:06:57,870 INFO L124 PetriNetUnfolderBase]: 181/2354 cut-off events. [2023-11-29 04:06:57,870 INFO L125 PetriNetUnfolderBase]: For 137/138 co-relation queries the response was YES. [2023-11-29 04:06:57,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 2354 events. 181/2354 cut-off events. For 137/138 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19853 event pairs, 136 based on Foata normal form. 3/2158 useless extension candidates. Maximal degree in co-relation 2631. Up to 340 conditions per place. [2023-11-29 04:06:57,886 INFO L140 encePairwiseOnDemand]: 383/389 looper letters, 42 selfloop transitions, 30 changer transitions 0/376 dead transitions. [2023-11-29 04:06:57,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 376 transitions, 1141 flow [2023-11-29 04:06:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:06:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:06:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9375 transitions. [2023-11-29 04:06:57,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8033419023136247 [2023-11-29 04:06:57,915 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9375 transitions. [2023-11-29 04:06:57,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9375 transitions. [2023-11-29 04:06:57,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:06:57,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9375 transitions. [2023-11-29 04:06:57,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 312.5) internal successors, (9375), 30 states have internal predecessors, (9375), 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) [2023-11-29 04:06:57,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 389.0) internal successors, (12059), 31 states have internal predecessors, (12059), 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) [2023-11-29 04:06:57,979 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 389.0) internal successors, (12059), 31 states have internal predecessors, (12059), 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) [2023-11-29 04:06:57,980 INFO L175 Difference]: Start difference. First operand has 372 places, 359 transitions, 869 flow. Second operand 30 states and 9375 transitions. [2023-11-29 04:06:57,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 376 transitions, 1141 flow [2023-11-29 04:06:57,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 376 transitions, 1111 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 04:06:57,992 INFO L231 Difference]: Finished difference. Result has 399 places, 369 transitions, 997 flow [2023-11-29 04:06:57,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=997, PETRI_PLACES=399, PETRI_TRANSITIONS=369} [2023-11-29 04:06:57,994 INFO L281 CegarLoopForPetriNet]: 344 programPoint places, 55 predicate places. [2023-11-29 04:06:57,994 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 369 transitions, 997 flow [2023-11-29 04:06:57,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 312.04347826086956) internal successors, (7177), 23 states have internal predecessors, (7177), 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) [2023-11-29 04:06:57,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:06:57,998 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:06:58,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:06:58,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:06:58,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 04:06:58,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1340647600, now seen corresponding path program 4 times [2023-11-29 04:06:58,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:58,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296325797] [2023-11-29 04:06:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:06:58,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:06:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:06:58,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:06:58,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:06:58,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-29 04:06:58,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-29 04:06:58,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-29 04:06:58,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-29 04:06:58,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-29 04:06:58,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-29 04:06:58,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-29 04:06:58,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-29 04:06:58,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-29 04:06:58,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-29 04:06:58,297 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-29 04:06:58,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-29 04:06:58,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-29 04:06:58,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-29 04:06:58,298 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-29 04:06:58,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-29 04:06:58,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-29 04:06:58,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-29 04:06:58,299 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-29 04:06:58,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-29 04:06:58,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-29 04:06:58,300 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-29 04:06:58,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:06:58,300 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-11-29 04:06:58,303 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:06:58,303 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 04:06:58,368 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 04:06:58,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 505 transitions, 1026 flow [2023-11-29 04:06:58,583 INFO L124 PetriNetUnfolderBase]: 126/1003 cut-off events. [2023-11-29 04:06:58,584 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 04:06:58,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 1003 events. 126/1003 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6521 event pairs, 0 based on Foata normal form. 0/829 useless extension candidates. Maximal degree in co-relation 624. Up to 12 conditions per place. [2023-11-29 04:06:58,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 505 transitions, 1026 flow [2023-11-29 04:06:58,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 505 transitions, 1026 flow [2023-11-29 04:06:58,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:06:58,609 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21cd10c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:06:58,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-29 04:06:58,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:06:58,622 INFO L124 PetriNetUnfolderBase]: 19/176 cut-off events. [2023-11-29 04:06:58,622 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:06:58,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:06:58,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:06:58,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 04:06:58,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:06:58,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1464586247, now seen corresponding path program 1 times [2023-11-29 04:06:58,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:06:58,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669421687] [2023-11-29 04:06:58,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:06:58,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:06:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:06:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:06:58,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:06:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669421687] [2023-11-29 04:06:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669421687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:06:58,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:06:58,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:06:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139784604] [2023-11-29 04:06:58,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:06:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:06:58,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:06:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:06:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:06:58,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 505 [2023-11-29 04:06:58,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 505 transitions, 1026 flow. Second operand has 3 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 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) [2023-11-29 04:06:58,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:06:58,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 505 [2023-11-29 04:06:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:07:02,049 INFO L124 PetriNetUnfolderBase]: 3251/22814 cut-off events. [2023-11-29 04:07:02,049 INFO L125 PetriNetUnfolderBase]: For 153/157 co-relation queries the response was YES. [2023-11-29 04:07:02,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27594 conditions, 22814 events. 3251/22814 cut-off events. For 153/157 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 312144 event pairs, 2680 based on Foata normal form. 5658/26583 useless extension candidates. Maximal degree in co-relation 24730. Up to 4707 conditions per place. [2023-11-29 04:07:02,188 INFO L140 encePairwiseOnDemand]: 448/505 looper letters, 41 selfloop transitions, 2 changer transitions 0/440 dead transitions. [2023-11-29 04:07:02,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 440 transitions, 982 flow [2023-11-29 04:07:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:07:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:07:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2023-11-29 04:07:02,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8673267326732673 [2023-11-29 04:07:02,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2023-11-29 04:07:02,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2023-11-29 04:07:02,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:07:02,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2023-11-29 04:07:02,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 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) [2023-11-29 04:07:02,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-29 04:07:02,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-29 04:07:02,198 INFO L175 Difference]: Start difference. First operand has 446 places, 505 transitions, 1026 flow. Second operand 3 states and 1314 transitions. [2023-11-29 04:07:02,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 440 transitions, 982 flow [2023-11-29 04:07:02,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 440 transitions, 982 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:07:02,207 INFO L231 Difference]: Finished difference. Result has 437 places, 440 transitions, 906 flow [2023-11-29 04:07:02,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=906, PETRI_PLACES=437, PETRI_TRANSITIONS=440} [2023-11-29 04:07:02,208 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, -9 predicate places. [2023-11-29 04:07:02,209 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 440 transitions, 906 flow [2023-11-29 04:07:02,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 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) [2023-11-29 04:07:02,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:02,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:02,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:07:02,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 04:07:02,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1167513573, now seen corresponding path program 1 times [2023-11-29 04:07:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:02,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400926544] [2023-11-29 04:07:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400926544] [2023-11-29 04:07:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400926544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265604021] [2023-11-29 04:07:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:02,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:02,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:02,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:02,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:07:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:02,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:07:02,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:07:02,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265604021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:02,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:07:02,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:07:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548344972] [2023-11-29 04:07:02,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:02,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:07:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:07:02,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:07:02,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 505 [2023-11-29 04:07:02,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 440 transitions, 906 flow. Second operand has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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) [2023-11-29 04:07:02,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:07:02,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 505 [2023-11-29 04:07:02,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:07:05,418 INFO L124 PetriNetUnfolderBase]: 3437/22710 cut-off events. [2023-11-29 04:07:05,418 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-29 04:07:05,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27828 conditions, 22710 events. 3437/22710 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 312640 event pairs, 1456 based on Foata normal form. 1/20825 useless extension candidates. Maximal degree in co-relation 27795. Up to 5049 conditions per place. [2023-11-29 04:07:05,548 INFO L140 encePairwiseOnDemand]: 502/505 looper letters, 49 selfloop transitions, 2 changer transitions 0/449 dead transitions. [2023-11-29 04:07:05,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 449 transitions, 1026 flow [2023-11-29 04:07:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:07:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:07:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1267 transitions. [2023-11-29 04:07:05,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8363036303630363 [2023-11-29 04:07:05,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1267 transitions. [2023-11-29 04:07:05,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1267 transitions. [2023-11-29 04:07:05,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:07:05,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1267 transitions. [2023-11-29 04:07:05,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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) [2023-11-29 04:07:05,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-29 04:07:05,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 505.0) internal successors, (2020), 4 states have internal predecessors, (2020), 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) [2023-11-29 04:07:05,561 INFO L175 Difference]: Start difference. First operand has 437 places, 440 transitions, 906 flow. Second operand 3 states and 1267 transitions. [2023-11-29 04:07:05,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 449 transitions, 1026 flow [2023-11-29 04:07:05,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 449 transitions, 1024 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:07:05,569 INFO L231 Difference]: Finished difference. Result has 439 places, 441 transitions, 916 flow [2023-11-29 04:07:05,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=916, PETRI_PLACES=439, PETRI_TRANSITIONS=441} [2023-11-29 04:07:05,570 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, -7 predicate places. [2023-11-29 04:07:05,570 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 441 transitions, 916 flow [2023-11-29 04:07:05,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 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) [2023-11-29 04:07:05,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:05,571 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:05,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:07:05,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:07:05,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 04:07:05,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash 5185784, now seen corresponding path program 1 times [2023-11-29 04:07:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014018841] [2023-11-29 04:07:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:05,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:05,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:05,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014018841] [2023-11-29 04:07:05,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014018841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:05,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502047546] [2023-11-29 04:07:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:05,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:05,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:05,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:05,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:07:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:05,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:07:05,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:05,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502047546] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:07:05,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:07:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 04:07:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683143399] [2023-11-29 04:07:05,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:05,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:07:05,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:05,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:07:05,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:07:06,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2023-11-29 04:07:06,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 441 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 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) [2023-11-29 04:07:06,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:07:06,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2023-11-29 04:07:06,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:07:09,144 INFO L124 PetriNetUnfolderBase]: 3247/22641 cut-off events. [2023-11-29 04:07:09,144 INFO L125 PetriNetUnfolderBase]: For 154/158 co-relation queries the response was YES. [2023-11-29 04:07:09,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27430 conditions, 22641 events. 3247/22641 cut-off events. For 154/158 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 311007 event pairs, 2680 based on Foata normal form. 2/20770 useless extension candidates. Maximal degree in co-relation 27366. Up to 4691 conditions per place. [2023-11-29 04:07:09,309 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 45 selfloop transitions, 9 changer transitions 0/449 dead transitions. [2023-11-29 04:07:09,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 449 transitions, 1042 flow [2023-11-29 04:07:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:07:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:07:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3674 transitions. [2023-11-29 04:07:09,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083608360836083 [2023-11-29 04:07:09,319 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3674 transitions. [2023-11-29 04:07:09,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3674 transitions. [2023-11-29 04:07:09,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:07:09,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3674 transitions. [2023-11-29 04:07:09,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 408.22222222222223) internal successors, (3674), 9 states have internal predecessors, (3674), 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) [2023-11-29 04:07:09,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 505.0) internal successors, (5050), 10 states have internal predecessors, (5050), 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) [2023-11-29 04:07:09,335 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 505.0) internal successors, (5050), 10 states have internal predecessors, (5050), 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) [2023-11-29 04:07:09,335 INFO L175 Difference]: Start difference. First operand has 439 places, 441 transitions, 916 flow. Second operand 9 states and 3674 transitions. [2023-11-29 04:07:09,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 449 transitions, 1042 flow [2023-11-29 04:07:09,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 449 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:07:09,345 INFO L231 Difference]: Finished difference. Result has 449 places, 447 transitions, 964 flow [2023-11-29 04:07:09,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=964, PETRI_PLACES=449, PETRI_TRANSITIONS=447} [2023-11-29 04:07:09,347 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, 3 predicate places. [2023-11-29 04:07:09,347 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 447 transitions, 964 flow [2023-11-29 04:07:09,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 404.0) internal successors, (4040), 10 states have internal predecessors, (4040), 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) [2023-11-29 04:07:09,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:09,349 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:09,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:07:09,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 04:07:09,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 04:07:09,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2029278632, now seen corresponding path program 2 times [2023-11-29 04:07:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084329434] [2023-11-29 04:07:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084329434] [2023-11-29 04:07:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084329434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035182939] [2023-11-29 04:07:09,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:07:09,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:09,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:09,705 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:09,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:07:09,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:07:09,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:07:09,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:07:09,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:09,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035182939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:07:09,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:07:09,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-29 04:07:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791613428] [2023-11-29 04:07:09,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:09,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:07:09,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:07:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:07:10,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2023-11-29 04:07:10,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 447 transitions, 964 flow. Second operand has 18 states, 18 states have (on average 404.0) internal successors, (7272), 18 states have internal predecessors, (7272), 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) [2023-11-29 04:07:10,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:07:10,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2023-11-29 04:07:10,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:07:13,829 INFO L124 PetriNetUnfolderBase]: 3247/22661 cut-off events. [2023-11-29 04:07:13,830 INFO L125 PetriNetUnfolderBase]: For 181/185 co-relation queries the response was YES. [2023-11-29 04:07:13,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27515 conditions, 22661 events. 3247/22661 cut-off events. For 181/185 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 310906 event pairs, 2680 based on Foata normal form. 4/20792 useless extension candidates. Maximal degree in co-relation 27370. Up to 4691 conditions per place. [2023-11-29 04:07:14,024 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 49 selfloop transitions, 21 changer transitions 0/465 dead transitions. [2023-11-29 04:07:14,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 465 transitions, 1200 flow [2023-11-29 04:07:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:07:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:07:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8516 transitions. [2023-11-29 04:07:14,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8030174446016031 [2023-11-29 04:07:14,051 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8516 transitions. [2023-11-29 04:07:14,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8516 transitions. [2023-11-29 04:07:14,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:07:14,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8516 transitions. [2023-11-29 04:07:14,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 405.5238095238095) internal successors, (8516), 21 states have internal predecessors, (8516), 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) [2023-11-29 04:07:14,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 505.0) internal successors, (11110), 22 states have internal predecessors, (11110), 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) [2023-11-29 04:07:14,104 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 505.0) internal successors, (11110), 22 states have internal predecessors, (11110), 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) [2023-11-29 04:07:14,105 INFO L175 Difference]: Start difference. First operand has 449 places, 447 transitions, 964 flow. Second operand 21 states and 8516 transitions. [2023-11-29 04:07:14,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 465 transitions, 1200 flow [2023-11-29 04:07:14,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 465 transitions, 1186 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 04:07:14,118 INFO L231 Difference]: Finished difference. Result has 473 places, 460 transitions, 1088 flow [2023-11-29 04:07:14,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1088, PETRI_PLACES=473, PETRI_TRANSITIONS=460} [2023-11-29 04:07:14,120 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, 27 predicate places. [2023-11-29 04:07:14,121 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 460 transitions, 1088 flow [2023-11-29 04:07:14,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 404.0) internal successors, (7272), 18 states have internal predecessors, (7272), 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) [2023-11-29 04:07:14,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:14,123 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:14,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:07:14,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:14,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 04:07:14,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1907234072, now seen corresponding path program 3 times [2023-11-29 04:07:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:14,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023863070] [2023-11-29 04:07:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:14,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023863070] [2023-11-29 04:07:14,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023863070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:14,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114004532] [2023-11-29 04:07:14,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:07:14,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:14,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:14,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:07:14,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-29 04:07:14,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:07:14,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:07:14,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:14,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:07:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114004532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:07:15,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:07:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-29 04:07:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054868822] [2023-11-29 04:07:15,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:07:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:07:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:07:15,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2023-11-29 04:07:15,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 460 transitions, 1088 flow. Second operand has 23 states, 23 states have (on average 404.0869565217391) internal successors, (9294), 23 states have internal predecessors, (9294), 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) [2023-11-29 04:07:15,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:07:15,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2023-11-29 04:07:15,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:07:18,846 INFO L124 PetriNetUnfolderBase]: 3247/22676 cut-off events. [2023-11-29 04:07:18,846 INFO L125 PetriNetUnfolderBase]: For 282/286 co-relation queries the response was YES. [2023-11-29 04:07:18,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27613 conditions, 22676 events. 3247/22676 cut-off events. For 282/286 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 311035 event pairs, 2680 based on Foata normal form. 3/20806 useless extension candidates. Maximal degree in co-relation 27374. Up to 4691 conditions per place. [2023-11-29 04:07:19,028 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 52 selfloop transitions, 30 changer transitions 0/477 dead transitions. [2023-11-29 04:07:19,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 477 transitions, 1380 flow [2023-11-29 04:07:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:07:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 04:07:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12145 transitions. [2023-11-29 04:07:19,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8016501650165017 [2023-11-29 04:07:19,038 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12145 transitions. [2023-11-29 04:07:19,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12145 transitions. [2023-11-29 04:07:19,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:07:19,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12145 transitions. [2023-11-29 04:07:19,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 404.8333333333333) internal successors, (12145), 30 states have internal predecessors, (12145), 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) [2023-11-29 04:07:19,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 505.0) internal successors, (15655), 31 states have internal predecessors, (15655), 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) [2023-11-29 04:07:19,071 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 505.0) internal successors, (15655), 31 states have internal predecessors, (15655), 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) [2023-11-29 04:07:19,071 INFO L175 Difference]: Start difference. First operand has 473 places, 460 transitions, 1088 flow. Second operand 30 states and 12145 transitions. [2023-11-29 04:07:19,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 477 transitions, 1380 flow [2023-11-29 04:07:19,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 477 transitions, 1350 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-29 04:07:19,083 INFO L231 Difference]: Finished difference. Result has 500 places, 470 transitions, 1216 flow [2023-11-29 04:07:19,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1216, PETRI_PLACES=500, PETRI_TRANSITIONS=470} [2023-11-29 04:07:19,085 INFO L281 CegarLoopForPetriNet]: 446 programPoint places, 54 predicate places. [2023-11-29 04:07:19,085 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 470 transitions, 1216 flow [2023-11-29 04:07:19,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 404.0869565217391) internal successors, (9294), 23 states have internal predecessors, (9294), 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) [2023-11-29 04:07:19,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:19,089 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:19,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:07:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:19,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-29 04:07:19,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:19,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1063498937, now seen corresponding path program 4 times [2023-11-29 04:07:19,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816595326] [2023-11-29 04:07:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:07:19,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:07:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:07:19,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:07:19,353 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:07:19,353 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-11-29 04:07:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-11-29 04:07:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-11-29 04:07:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-11-29 04:07:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-11-29 04:07:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-11-29 04:07:19,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-11-29 04:07:19,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-11-29 04:07:19,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-11-29 04:07:19,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-11-29 04:07:19,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-11-29 04:07:19,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-11-29 04:07:19,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-11-29 04:07:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:07:19,357 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-29 04:07:19,358 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 04:07:19,358 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 04:07:19,426 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:07:19,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 621 transitions, 1269 flow [2023-11-29 04:07:19,738 INFO L124 PetriNetUnfolderBase]: 179/1431 cut-off events. [2023-11-29 04:07:19,739 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 04:07:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 1431 events. 179/1431 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9841 event pairs, 1 based on Foata normal form. 0/1185 useless extension candidates. Maximal degree in co-relation 1011. Up to 16 conditions per place. [2023-11-29 04:07:19,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 548 places, 621 transitions, 1269 flow [2023-11-29 04:07:19,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 548 places, 621 transitions, 1269 flow [2023-11-29 04:07:19,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:07:19,769 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@21cd10c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:07:19,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-29 04:07:19,777 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:07:19,777 INFO L124 PetriNetUnfolderBase]: 19/176 cut-off events. [2023-11-29 04:07:19,778 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 04:07:19,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:19,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:19,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-29 04:07:19,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1902747162, now seen corresponding path program 1 times [2023-11-29 04:07:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:19,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26458210] [2023-11-29 04:07:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:19,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:19,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:19,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26458210] [2023-11-29 04:07:19,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26458210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:19,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:19,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:07:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647305036] [2023-11-29 04:07:19,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:07:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:19,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:07:19,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:07:19,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 621 [2023-11-29 04:07:19,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 621 transitions, 1269 flow. Second operand has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 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) [2023-11-29 04:07:19,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:07:19,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 621 [2023-11-29 04:07:19,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:07:56,919 INFO L124 PetriNetUnfolderBase]: 44719/223414 cut-off events. [2023-11-29 04:07:56,919 INFO L125 PetriNetUnfolderBase]: For 2321/2333 co-relation queries the response was YES. [2023-11-29 04:07:58,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282397 conditions, 223414 events. 44719/223414 cut-off events. For 2321/2333 co-relation queries the response was YES. Maximal size of possible extension queue 4650. Compared 4002541 event pairs, 37769 based on Foata normal form. 69765/275809 useless extension candidates. Maximal degree in co-relation 252538. Up to 58025 conditions per place. [2023-11-29 04:07:59,602 INFO L140 encePairwiseOnDemand]: 551/621 looper letters, 51 selfloop transitions, 2 changer transitions 0/540 dead transitions. [2023-11-29 04:07:59,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 540 transitions, 1213 flow [2023-11-29 04:07:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:07:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:07:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1613 transitions. [2023-11-29 04:07:59,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8658078368223295 [2023-11-29 04:07:59,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1613 transitions. [2023-11-29 04:07:59,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1613 transitions. [2023-11-29 04:07:59,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:07:59,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1613 transitions. [2023-11-29 04:07:59,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.6666666666666) internal successors, (1613), 3 states have internal predecessors, (1613), 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) [2023-11-29 04:07:59,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2023-11-29 04:07:59,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2023-11-29 04:07:59,610 INFO L175 Difference]: Start difference. First operand has 548 places, 621 transitions, 1269 flow. Second operand 3 states and 1613 transitions. [2023-11-29 04:07:59,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 540 transitions, 1213 flow [2023-11-29 04:07:59,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 540 transitions, 1213 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:07:59,638 INFO L231 Difference]: Finished difference. Result has 536 places, 540 transitions, 1117 flow [2023-11-29 04:07:59,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1117, PETRI_PLACES=536, PETRI_TRANSITIONS=540} [2023-11-29 04:07:59,639 INFO L281 CegarLoopForPetriNet]: 548 programPoint places, -12 predicate places. [2023-11-29 04:07:59,639 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 540 transitions, 1117 flow [2023-11-29 04:07:59,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 499.3333333333333) internal successors, (1498), 3 states have internal predecessors, (1498), 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) [2023-11-29 04:07:59,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:07:59,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:07:59,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:07:59,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-29 04:07:59,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:59,641 INFO L85 PathProgramCache]: Analyzing trace with hash 192500978, now seen corresponding path program 1 times [2023-11-29 04:07:59,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:59,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818397225] [2023-11-29 04:07:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:59,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:59,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:07:59,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:59,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818397225] [2023-11-29 04:07:59,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818397225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:07:59,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201229516] [2023-11-29 04:07:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:59,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:59,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:59,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:59,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:07:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:59,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:07:59,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:07:59,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201229516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:59,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:07:59,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:07:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525230901] [2023-11-29 04:07:59,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:59,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:07:59,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:07:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:07:59,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 621 [2023-11-29 04:07:59,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 540 transitions, 1117 flow. Second operand has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 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) [2023-11-29 04:07:59,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:07:59,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 621 [2023-11-29 04:07:59,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:08:39,140 INFO L124 PetriNetUnfolderBase]: 48812/226669 cut-off events. [2023-11-29 04:08:39,140 INFO L125 PetriNetUnfolderBase]: For 3878/3881 co-relation queries the response was YES. [2023-11-29 04:08:40,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291202 conditions, 226669 events. 48812/226669 cut-off events. For 3878/3881 co-relation queries the response was YES. Maximal size of possible extension queue 4865. Compared 4033603 event pairs, 44049 based on Foata normal form. 1/209070 useless extension candidates. Maximal degree in co-relation 291168. Up to 63759 conditions per place. [2023-11-29 04:08:41,579 INFO L140 encePairwiseOnDemand]: 618/621 looper letters, 59 selfloop transitions, 2 changer transitions 0/549 dead transitions. [2023-11-29 04:08:41,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 549 transitions, 1257 flow [2023-11-29 04:08:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:08:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:08:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1553 transitions. [2023-11-29 04:08:41,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8336017176596887 [2023-11-29 04:08:41,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1553 transitions. [2023-11-29 04:08:41,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1553 transitions. [2023-11-29 04:08:41,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:08:41,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1553 transitions. [2023-11-29 04:08:41,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 517.6666666666666) internal successors, (1553), 3 states have internal predecessors, (1553), 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) [2023-11-29 04:08:41,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2023-11-29 04:08:41,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 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) [2023-11-29 04:08:41,584 INFO L175 Difference]: Start difference. First operand has 536 places, 540 transitions, 1117 flow. Second operand 3 states and 1553 transitions. [2023-11-29 04:08:41,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 549 transitions, 1257 flow [2023-11-29 04:08:41,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 549 transitions, 1255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:08:41,593 INFO L231 Difference]: Finished difference. Result has 538 places, 541 transitions, 1127 flow [2023-11-29 04:08:41,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1127, PETRI_PLACES=538, PETRI_TRANSITIONS=541} [2023-11-29 04:08:41,594 INFO L281 CegarLoopForPetriNet]: 548 programPoint places, -10 predicate places. [2023-11-29 04:08:41,594 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 541 transitions, 1127 flow [2023-11-29 04:08:41,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 499.0) internal successors, (1497), 3 states have internal predecessors, (1497), 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) [2023-11-29 04:08:41,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:08:41,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:08:41,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:08:41,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:41,795 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-29 04:08:41,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1922025625, now seen corresponding path program 1 times [2023-11-29 04:08:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:08:41,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394961113] [2023-11-29 04:08:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:08:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:08:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:08:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394961113] [2023-11-29 04:08:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394961113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:08:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32986948] [2023-11-29 04:08:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:41,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:08:41,990 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:08:41,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:08:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:42,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:08:42,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:08:42,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:08:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:08:42,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32986948] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:08:42,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:08:42,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 04:08:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6840919] [2023-11-29 04:08:42,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:08:42,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:08:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:08:42,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:08:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:08:42,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 494 out of 621 [2023-11-29 04:08:42,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 541 transitions, 1127 flow. Second operand has 10 states, 10 states have (on average 496.1) internal successors, (4961), 10 states have internal predecessors, (4961), 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) [2023-11-29 04:08:42,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:08:42,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 494 of 621 [2023-11-29 04:08:42,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:09:19,541 INFO L124 PetriNetUnfolderBase]: 44715/223241 cut-off events. [2023-11-29 04:09:19,541 INFO L125 PetriNetUnfolderBase]: For 2322/2334 co-relation queries the response was YES. [2023-11-29 04:09:21,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282235 conditions, 223241 events. 44715/223241 cut-off events. For 2322/2334 co-relation queries the response was YES. Maximal size of possible extension queue 4652. Compared 4003571 event pairs, 37769 based on Foata normal form. 2/205888 useless extension candidates. Maximal degree in co-relation 282170. Up to 58009 conditions per place. [2023-11-29 04:09:22,054 INFO L140 encePairwiseOnDemand]: 615/621 looper letters, 55 selfloop transitions, 9 changer transitions 0/549 dead transitions. [2023-11-29 04:09:22,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 549 transitions, 1273 flow [2023-11-29 04:09:22,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:09:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:09:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4512 transitions. [2023-11-29 04:09:22,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8073000536768653 [2023-11-29 04:09:22,058 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4512 transitions. [2023-11-29 04:09:22,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4512 transitions. [2023-11-29 04:09:22,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:09:22,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4512 transitions. [2023-11-29 04:09:22,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 501.3333333333333) internal successors, (4512), 9 states have internal predecessors, (4512), 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) [2023-11-29 04:09:22,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 621.0) internal successors, (6210), 10 states have internal predecessors, (6210), 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) [2023-11-29 04:09:22,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 621.0) internal successors, (6210), 10 states have internal predecessors, (6210), 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) [2023-11-29 04:09:22,071 INFO L175 Difference]: Start difference. First operand has 538 places, 541 transitions, 1127 flow. Second operand 9 states and 4512 transitions. [2023-11-29 04:09:22,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 549 transitions, 1273 flow [2023-11-29 04:09:22,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 549 transitions, 1271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 04:09:22,096 INFO L231 Difference]: Finished difference. Result has 548 places, 547 transitions, 1175 flow [2023-11-29 04:09:22,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1175, PETRI_PLACES=548, PETRI_TRANSITIONS=547} [2023-11-29 04:09:22,098 INFO L281 CegarLoopForPetriNet]: 548 programPoint places, 0 predicate places. [2023-11-29 04:09:22,098 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 547 transitions, 1175 flow [2023-11-29 04:09:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 496.1) internal successors, (4961), 10 states have internal predecessors, (4961), 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) [2023-11-29 04:09:22,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:09:22,099 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:09:22,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:09:22,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:09:22,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-29 04:09:22,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1067986151, now seen corresponding path program 2 times [2023-11-29 04:09:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:09:22,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650058104] [2023-11-29 04:09:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:09:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:09:22,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:09:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650058104] [2023-11-29 04:09:22,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650058104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:09:22,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187058435] [2023-11-29 04:09:22,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:09:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:09:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:09:22,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:09:22,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5496b7-17a8-4607-a1b1-6f3132adaa68/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:09:22,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:09:22,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:09:22,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:09:22,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:22,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:09:22,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 04:09:22,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:09:22,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 04:09:22,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:09:22,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-29 04:09:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 04:09:22,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:09:22,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187058435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:09:22,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:09:22,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-11-29 04:09:22,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85619659] [2023-11-29 04:09:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:09:22,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:09:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:09:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:09:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:09:23,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 621 [2023-11-29 04:09:23,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 547 transitions, 1175 flow. Second operand has 6 states, 6 states have (on average 441.6666666666667) internal successors, (2650), 6 states have internal predecessors, (2650), 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) [2023-11-29 04:09:23,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:09:23,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 621 [2023-11-29 04:09:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand