./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/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_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/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_5fab7f89-7e18-4031-ab38-569e86bc88f5/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 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:37:51,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:37:51,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 06:37:51,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:37:51,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:37:51,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:37:51,383 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:37:51,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:37:51,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:37:51,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:37:51,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:37:51,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:37:51,387 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:37:51,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:37:51,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:37:51,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:37:51,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:37:51,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:37:51,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:37:51,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:37:51,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:37:51,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:37:51,393 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 06:37:51,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:37:51,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:37:51,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:37:51,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:37:51,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:37:51,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:37:51,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:37:51,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:37:51,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:37:51,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:37:51,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:37:51,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:37:51,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:37:51,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:37:51,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:37:51,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:37:51,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:37:51,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:37:51,400 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_5fab7f89-7e18-4031-ab38-569e86bc88f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8226cdfe97f42edd1b15fbab303246bf7577cc25c46c21444e4109afadd604 [2023-11-29 06:37:51,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:37:51,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:37:51,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:37:51,665 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:37:51,666 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:37:51,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i [2023-11-29 06:37:54,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:37:54,775 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:37:54,775 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs-pthread.i [2023-11-29 06:37:54,792 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/data/2acac0a6b/bacc6a7c54f148b7ae647452a1e27a8c/FLAGfd4ab896f [2023-11-29 06:37:54,807 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/data/2acac0a6b/bacc6a7c54f148b7ae647452a1e27a8c [2023-11-29 06:37:54,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:37:54,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:37:54,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:37:54,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:37:54,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:37:54,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:37:54" (1/1) ... [2023-11-29 06:37:54,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ac4260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:54, skipping insertion in model container [2023-11-29 06:37:54,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:37:54" (1/1) ... [2023-11-29 06:37:54,867 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:37:55,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:37:55,178 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:37:55,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:37:55,258 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:37:55,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55 WrapperNode [2023-11-29 06:37:55,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:37:55,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:37:55,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:37:55,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:37:55,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,304 INFO L138 Inliner]: procedures = 165, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-11-29 06:37:55,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:37:55,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:37:55,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:37:55,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:37:55,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:37:55,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:37:55,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:37:55,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:37:55,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (1/1) ... [2023-11-29 06:37:55,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:37:55,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:37:55,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:37:55,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fab7f89-7e18-4031-ab38-569e86bc88f5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:37:55,406 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-29 06:37:55,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-29 06:37:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 06:37:55,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 06:37:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 06:37:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 06:37:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:37:55,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:37:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:37:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 06:37:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 06:37:55,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:37:55,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:37:55,410 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 06:37:55,552 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:37:55,555 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:37:55,741 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:37:55,772 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:37:55,772 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:37:55,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:37:55 BoogieIcfgContainer [2023-11-29 06:37:55,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:37:55,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:37:55,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:37:55,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:37:55,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:37:54" (1/3) ... [2023-11-29 06:37:55,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c89918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:37:55, skipping insertion in model container [2023-11-29 06:37:55,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:37:55" (2/3) ... [2023-11-29 06:37:55,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c89918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:37:55, skipping insertion in model container [2023-11-29 06:37:55,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:37:55" (3/3) ... [2023-11-29 06:37:55,784 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2023-11-29 06:37:55,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:37:55,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:37:55,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-29 06:37:55,801 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:37:55,867 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:37:55,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 124 transitions, 256 flow [2023-11-29 06:37:55,988 INFO L124 PetriNetUnfolderBase]: 7/134 cut-off events. [2023-11-29 06:37:55,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:37:55,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 134 events. 7/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-11-29 06:37:55,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 124 transitions, 256 flow [2023-11-29 06:37:56,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 123 transitions, 253 flow [2023-11-29 06:37:56,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:37:56,025 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;@ca9a0ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:37:56,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 06:37:56,036 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:37:56,037 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-29 06:37:56,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:37:56,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:37:56,038 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] [2023-11-29 06:37:56,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-29 06:37:56,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1992433181, now seen corresponding path program 1 times [2023-11-29 06:37:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:56,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915235494] [2023-11-29 06:37:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:56,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:56,278 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 06:37:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:56,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915235494] [2023-11-29 06:37:56,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915235494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:56,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:56,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:37:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897510882] [2023-11-29 06:37:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:56,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:56,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 124 [2023-11-29 06:37:56,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:56,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:37:56,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 124 [2023-11-29 06:37:56,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:37:56,564 INFO L124 PetriNetUnfolderBase]: 120/558 cut-off events. [2023-11-29 06:37:56,564 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 06:37:56,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 558 events. 120/558 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2501 event pairs, 37 based on Foata normal form. 224/729 useless extension candidates. Maximal degree in co-relation 801. Up to 176 conditions per place. [2023-11-29 06:37:56,573 INFO L140 encePairwiseOnDemand]: 103/124 looper letters, 26 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2023-11-29 06:37:56,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 116 transitions, 314 flow [2023-11-29 06:37:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:56,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:37:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-29 06:37:56,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8682795698924731 [2023-11-29 06:37:56,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-29 06:37:56,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-29 06:37:56,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:37:56,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-29 06:37:56,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 06:37:56,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 06:37:56,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 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 06:37:56,606 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 253 flow. Second operand 3 states and 323 transitions. [2023-11-29 06:37:56,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 116 transitions, 314 flow [2023-11-29 06:37:56,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 116 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:37:56,615 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 278 flow [2023-11-29 06:37:56,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2023-11-29 06:37:56,621 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -13 predicate places. [2023-11-29 06:37:56,621 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 278 flow [2023-11-29 06:37:56,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:56,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:37:56,622 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] [2023-11-29 06:37:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:37:56,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-11-29 06:37:56,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1803775311, now seen corresponding path program 1 times [2023-11-29 06:37:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:56,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689200417] [2023-11-29 06:37:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:37:56,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:37:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:37:56,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:37:56,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:37:56,706 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-11-29 06:37:56,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-11-29 06:37:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-11-29 06:37:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-11-29 06:37:56,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-11-29 06:37:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-11-29 06:37:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-11-29 06:37:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-11-29 06:37:56,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-11-29 06:37:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-11-29 06:37:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-29 06:37:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-11-29 06:37:56,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-11-29 06:37:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-11-29 06:37:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-11-29 06:37:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-11-29 06:37:56,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-11-29 06:37:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-11-29 06:37:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-11-29 06:37:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-11-29 06:37:56,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:37:56,713 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 06:37:56,716 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 06:37:56,716 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 06:37:56,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:37:56,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 211 transitions, 442 flow [2023-11-29 06:37:56,825 INFO L124 PetriNetUnfolderBase]: 9/211 cut-off events. [2023-11-29 06:37:56,826 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 06:37:56,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 211 events. 9/211 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 406 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 218. Up to 6 conditions per place. [2023-11-29 06:37:56,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 211 transitions, 442 flow [2023-11-29 06:37:56,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 187 transitions, 387 flow [2023-11-29 06:37:56,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:37:56,841 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;@ca9a0ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:37:56,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-29 06:37:56,851 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:37:56,851 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2023-11-29 06:37:56,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:37:56,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:37:56,853 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] [2023-11-29 06:37:56,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-29 06:37:56,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2045423796, now seen corresponding path program 1 times [2023-11-29 06:37:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:56,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881928178] [2023-11-29 06:37:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:56,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:37:56,954 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 06:37:56,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:37:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881928178] [2023-11-29 06:37:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881928178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:37:56,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:37:56,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:37:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300669104] [2023-11-29 06:37:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:37:56,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:37:56,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:37:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:37:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:37:57,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 211 [2023-11-29 06:37:57,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 187 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:57,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:37:57,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 211 [2023-11-29 06:37:57,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:37:59,679 INFO L124 PetriNetUnfolderBase]: 6141/16470 cut-off events. [2023-11-29 06:37:59,679 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2023-11-29 06:37:59,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 16470 events. 6141/16470 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 162142 event pairs, 2047 based on Foata normal form. 6121/20763 useless extension candidates. Maximal degree in co-relation 26667. Up to 6244 conditions per place. [2023-11-29 06:37:59,858 INFO L140 encePairwiseOnDemand]: 170/211 looper letters, 60 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2023-11-29 06:37:59,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 209 transitions, 611 flow [2023-11-29 06:37:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:37:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:37:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-11-29 06:37:59,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8562401263823065 [2023-11-29 06:37:59,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-11-29 06:37:59,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-11-29 06:37:59,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:37:59,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-11-29 06:37:59,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 06:37:59,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 06:37:59,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 06:37:59,870 INFO L175 Difference]: Start difference. First operand has 188 places, 187 transitions, 387 flow. Second operand 3 states and 542 transitions. [2023-11-29 06:37:59,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 209 transitions, 611 flow [2023-11-29 06:37:59,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 209 transitions, 610 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:37:59,877 INFO L231 Difference]: Finished difference. Result has 179 places, 197 transitions, 580 flow [2023-11-29 06:37:59,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=179, PETRI_TRANSITIONS=197} [2023-11-29 06:37:59,878 INFO L281 CegarLoopForPetriNet]: 188 programPoint places, -9 predicate places. [2023-11-29 06:37:59,879 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 197 transitions, 580 flow [2023-11-29 06:37:59,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:59,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:37:59,880 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 06:37:59,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:37:59,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-11-29 06:37:59,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:37:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash 152249957, now seen corresponding path program 1 times [2023-11-29 06:37:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:37:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116094305] [2023-11-29 06:37:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:37:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:37:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:37:59,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:37:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:37:59,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:37:59,936 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:37:59,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-29 06:37:59,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-11-29 06:37:59,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-11-29 06:37:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-11-29 06:37:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-11-29 06:37:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-11-29 06:37:59,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-11-29 06:37:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-11-29 06:37:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-11-29 06:37:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-11-29 06:37:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 29 remaining) [2023-11-29 06:37:59,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-11-29 06:37:59,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-11-29 06:37:59,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-11-29 06:37:59,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-11-29 06:37:59,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-11-29 06:37:59,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-11-29 06:37:59,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-11-29 06:37:59,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-11-29 06:37:59,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-11-29 06:37:59,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-11-29 06:37:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-11-29 06:37:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-11-29 06:37:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-11-29 06:37:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-11-29 06:37:59,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-11-29 06:37:59,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-11-29 06:37:59,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-11-29 06:37:59,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-11-29 06:37:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:37:59,942 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 06:37:59,943 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 06:37:59,943 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 06:37:59,997 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:38:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 298 transitions, 632 flow [2023-11-29 06:38:00,050 INFO L124 PetriNetUnfolderBase]: 11/288 cut-off events. [2023-11-29 06:38:00,050 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 06:38:00,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 288 events. 11/288 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 747 event pairs, 0 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 299. Up to 8 conditions per place. [2023-11-29 06:38:00,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 298 transitions, 632 flow [2023-11-29 06:38:00,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 251 transitions, 523 flow [2023-11-29 06:38:00,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:38:00,059 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;@ca9a0ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:38:00,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 06:38:00,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:38:00,063 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-29 06:38:00,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:38:00,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:38:00,063 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] [2023-11-29 06:38:00,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-29 06:38:00,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash -468327444, now seen corresponding path program 1 times [2023-11-29 06:38:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721355104] [2023-11-29 06:38:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:00,139 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 06:38:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:00,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721355104] [2023-11-29 06:38:00,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721355104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:38:00,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:38:00,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:38:00,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114402833] [2023-11-29 06:38:00,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:38:00,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:38:00,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:38:00,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:38:00,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 298 [2023-11-29 06:38:00,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 251 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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 06:38:00,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:38:00,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 298 [2023-11-29 06:38:00,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:39:01,182 INFO L124 PetriNetUnfolderBase]: 227996/468162 cut-off events. [2023-11-29 06:39:01,182 INFO L125 PetriNetUnfolderBase]: For 21694/21694 co-relation queries the response was YES. [2023-11-29 06:39:02,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802405 conditions, 468162 events. 227996/468162 cut-off events. For 21694/21694 co-relation queries the response was YES. Maximal size of possible extension queue 7437. Compared 6102420 event pairs, 88316 based on Foata normal form. 152398/564602 useless extension candidates. Maximal degree in co-relation 802375. Up to 194138 conditions per place. [2023-11-29 06:39:05,584 INFO L140 encePairwiseOnDemand]: 241/298 looper letters, 86 selfloop transitions, 38 changer transitions 0/290 dead transitions. [2023-11-29 06:39:05,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 290 transitions, 864 flow [2023-11-29 06:39:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:39:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:39:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2023-11-29 06:39:05,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8378076062639821 [2023-11-29 06:39:05,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2023-11-29 06:39:05,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2023-11-29 06:39:05,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:39:05,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2023-11-29 06:39:05,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 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 06:39:05,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 06:39:05,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 06:39:05,594 INFO L175 Difference]: Start difference. First operand has 253 places, 251 transitions, 523 flow. Second operand 3 states and 749 transitions. [2023-11-29 06:39:05,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 290 transitions, 864 flow [2023-11-29 06:39:05,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 290 transitions, 859 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 06:39:05,612 INFO L231 Difference]: Finished difference. Result has 244 places, 273 transitions, 818 flow [2023-11-29 06:39:05,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=818, PETRI_PLACES=244, PETRI_TRANSITIONS=273} [2023-11-29 06:39:05,614 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -9 predicate places. [2023-11-29 06:39:05,614 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 273 transitions, 818 flow [2023-11-29 06:39:05,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 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 06:39:05,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:05,615 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] [2023-11-29 06:39:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:39:05,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-29 06:39:05,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 303608142, now seen corresponding path program 1 times [2023-11-29 06:39:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:05,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990173779] [2023-11-29 06:39:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:05,673 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 06:39:05,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:05,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990173779] [2023-11-29 06:39:05,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990173779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:39:05,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:39:05,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:39:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53170845] [2023-11-29 06:39:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:39:05,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:39:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:39:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:39:05,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 298 [2023-11-29 06:39:05,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 273 transitions, 818 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 06:39:05,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:05,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 298 [2023-11-29 06:39:05,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:19,643 INFO L124 PetriNetUnfolderBase]: 238776/547752 cut-off events. [2023-11-29 06:40:19,643 INFO L125 PetriNetUnfolderBase]: For 292193/305576 co-relation queries the response was YES. [2023-11-29 06:40:22,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184383 conditions, 547752 events. 238776/547752 cut-off events. For 292193/305576 co-relation queries the response was YES. Maximal size of possible extension queue 8339. Compared 7815065 event pairs, 118203 based on Foata normal form. 1178/494606 useless extension candidates. Maximal degree in co-relation 1184352. Up to 258146 conditions per place. [2023-11-29 06:40:25,711 INFO L140 encePairwiseOnDemand]: 277/298 looper letters, 84 selfloop transitions, 38 changer transitions 0/321 dead transitions. [2023-11-29 06:40:25,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 321 transitions, 1270 flow [2023-11-29 06:40:25,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:40:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 753 transitions. [2023-11-29 06:40:25,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8422818791946308 [2023-11-29 06:40:25,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 753 transitions. [2023-11-29 06:40:25,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 753 transitions. [2023-11-29 06:40:25,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:25,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 753 transitions. [2023-11-29 06:40:25,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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 06:40:25,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 06:40:25,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 06:40:25,726 INFO L175 Difference]: Start difference. First operand has 244 places, 273 transitions, 818 flow. Second operand 3 states and 753 transitions. [2023-11-29 06:40:25,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 321 transitions, 1270 flow [2023-11-29 06:40:26,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 321 transitions, 1160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:40:26,188 INFO L231 Difference]: Finished difference. Result has 246 places, 309 transitions, 1108 flow [2023-11-29 06:40:26,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1108, PETRI_PLACES=246, PETRI_TRANSITIONS=309} [2023-11-29 06:40:26,190 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -7 predicate places. [2023-11-29 06:40:26,190 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 309 transitions, 1108 flow [2023-11-29 06:40:26,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 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 06:40:26,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:26,192 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] [2023-11-29 06:40:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:40:26,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-29 06:40:26,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash 737791686, now seen corresponding path program 1 times [2023-11-29 06:40:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726956135] [2023-11-29 06:40:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:26,326 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 06:40:26,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:26,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726956135] [2023-11-29 06:40:26,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726956135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:26,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:26,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:40:26,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680311654] [2023-11-29 06:40:26,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:26,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:26,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 298 [2023-11-29 06:40:26,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 309 transitions, 1108 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 06:40:26,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:26,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 298 [2023-11-29 06:40:26,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:40:26,961 INFO L124 PetriNetUnfolderBase]: 302/4320 cut-off events. [2023-11-29 06:40:26,961 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2023-11-29 06:40:26,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 4320 events. 302/4320 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 37586 event pairs, 83 based on Foata normal form. 566/4592 useless extension candidates. Maximal degree in co-relation 6765. Up to 721 conditions per place. [2023-11-29 06:40:26,983 INFO L140 encePairwiseOnDemand]: 284/298 looper letters, 8 selfloop transitions, 14 changer transitions 0/231 dead transitions. [2023-11-29 06:40:26,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 231 transitions, 681 flow [2023-11-29 06:40:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:40:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:40:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-11-29 06:40:26,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8914988814317674 [2023-11-29 06:40:26,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-11-29 06:40:26,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-11-29 06:40:26,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:40:26,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-11-29 06:40:26,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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 06:40:26,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 06:40:26,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 06:40:26,995 INFO L175 Difference]: Start difference. First operand has 246 places, 309 transitions, 1108 flow. Second operand 3 states and 797 transitions. [2023-11-29 06:40:26,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 231 transitions, 681 flow [2023-11-29 06:40:27,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 231 transitions, 601 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-11-29 06:40:27,009 INFO L231 Difference]: Finished difference. Result has 230 places, 228 transitions, 566 flow [2023-11-29 06:40:27,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=230, PETRI_TRANSITIONS=228} [2023-11-29 06:40:27,011 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -23 predicate places. [2023-11-29 06:40:27,011 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 228 transitions, 566 flow [2023-11-29 06:40:27,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 06:40:27,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:27,012 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2023-11-29 06:40:27,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:40:27,013 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2023-11-29 06:40:27,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:27,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1597168921, now seen corresponding path program 1 times [2023-11-29 06:40:27,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:27,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772298766] [2023-11-29 06:40:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:27,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:40:27,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:40:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:40:27,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:40:27,061 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:40:27,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2023-11-29 06:40:27,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2023-11-29 06:40:27,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2023-11-29 06:40:27,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2023-11-29 06:40:27,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2023-11-29 06:40:27,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2023-11-29 06:40:27,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2023-11-29 06:40:27,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2023-11-29 06:40:27,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2023-11-29 06:40:27,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2023-11-29 06:40:27,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 38 remaining) [2023-11-29 06:40:27,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2023-11-29 06:40:27,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2023-11-29 06:40:27,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2023-11-29 06:40:27,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2023-11-29 06:40:27,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2023-11-29 06:40:27,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2023-11-29 06:40:27,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2023-11-29 06:40:27,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2023-11-29 06:40:27,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2023-11-29 06:40:27,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2023-11-29 06:40:27,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2023-11-29 06:40:27,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2023-11-29 06:40:27,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2023-11-29 06:40:27,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2023-11-29 06:40:27,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2023-11-29 06:40:27,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2023-11-29 06:40:27,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2023-11-29 06:40:27,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2023-11-29 06:40:27,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2023-11-29 06:40:27,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2023-11-29 06:40:27,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2023-11-29 06:40:27,067 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2023-11-29 06:40:27,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2023-11-29 06:40:27,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2023-11-29 06:40:27,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2023-11-29 06:40:27,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2023-11-29 06:40:27,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2023-11-29 06:40:27,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:40:27,069 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 06:40:27,069 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 06:40:27,070 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 06:40:27,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 06:40:27,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 385 transitions, 826 flow [2023-11-29 06:40:27,220 INFO L124 PetriNetUnfolderBase]: 13/365 cut-off events. [2023-11-29 06:40:27,220 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 06:40:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 365 events. 13/365 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1143 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 381. Up to 10 conditions per place. [2023-11-29 06:40:27,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 385 transitions, 826 flow [2023-11-29 06:40:27,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 315 transitions, 661 flow [2023-11-29 06:40:27,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:40:27,232 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;@ca9a0ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:40:27,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2023-11-29 06:40:27,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:40:27,236 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2023-11-29 06:40:27,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:40:27,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:40:27,236 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] [2023-11-29 06:40:27,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 43 more)] === [2023-11-29 06:40:27,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:27,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1556111421, now seen corresponding path program 1 times [2023-11-29 06:40:27,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:27,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010237198] [2023-11-29 06:40:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:27,270 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 06:40:27,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:27,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010237198] [2023-11-29 06:40:27,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010237198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:27,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:40:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654317807] [2023-11-29 06:40:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:27,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:40:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:40:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:40:27,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 385 [2023-11-29 06:40:27,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 315 transitions, 661 flow. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:27,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:40:27,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 385 [2023-11-29 06:40:27,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand