./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3fabc1cc94c3126ff26eb9b915167fe6a6af37b0806df7c41554f022c4d5bcac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:33,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:33,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-19 07:36:33,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:33,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:33,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:33,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:33,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:33,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:33,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:33,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:33,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:33,419 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:33,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:33,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:33,421 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:33,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:33,422 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:33,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:33,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:33,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:33,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:33,425 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 07:36:33,426 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:33,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:33,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:33,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:33,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:33,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:33,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:33,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:33,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:33,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:33,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:33,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:33,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:33,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:33,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:33,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:33,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:33,435 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:33,442 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_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fabc1cc94c3126ff26eb9b915167fe6a6af37b0806df7c41554f022c4d5bcac [2023-11-19 07:36:33,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:33,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:33,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:33,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:33,801 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:33,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i [2023-11-19 07:36:36,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:37,114 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:37,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i [2023-11-19 07:36:37,136 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/data/70d5e6e3d/95a73b85c8ff436aae3b6150e876630d/FLAG62561e03d [2023-11-19 07:36:37,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/data/70d5e6e3d/95a73b85c8ff436aae3b6150e876630d [2023-11-19 07:36:37,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:37,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:37,155 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:37,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:37,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:37,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdea771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37, skipping insertion in model container [2023-11-19 07:36:37,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:37,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:37,640 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:37,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:37,757 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:37,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37 WrapperNode [2023-11-19 07:36:37,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:37,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:37,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:37,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:37,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,803 INFO L138 Inliner]: procedures = 157, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-11-19 07:36:37,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:37,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:37,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:37,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:37,853 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:37,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:37,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:37,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:37,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (1/1) ... [2023-11-19 07:36:37,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:37,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:37,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:37,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:38,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:36:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:36:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:38,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:38,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-19 07:36:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-19 07:36:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:38,006 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:36:38,187 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:38,191 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:38,380 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:38,389 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:38,389 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:36:38,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:38 BoogieIcfgContainer [2023-11-19 07:36:38,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:38,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:38,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:38,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:38,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:37" (1/3) ... [2023-11-19 07:36:38,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1bac4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:38, skipping insertion in model container [2023-11-19 07:36:38,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:37" (2/3) ... [2023-11-19 07:36:38,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1bac4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:38, skipping insertion in model container [2023-11-19 07:36:38,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:38" (3/3) ... [2023-11-19 07:36:38,403 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-array-const.i [2023-11-19 07:36:38,413 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:36:38,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:38,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-19 07:36:38,425 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:38,480 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:36:38,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 147 flow [2023-11-19 07:36:38,569 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2023-11-19 07:36:38,569 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:36:38,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 5/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2023-11-19 07:36:38,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 147 flow [2023-11-19 07:36:38,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 147 flow [2023-11-19 07:36:38,584 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:38,594 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions, 147 flow [2023-11-19 07:36:38,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 70 transitions, 147 flow [2023-11-19 07:36:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 147 flow [2023-11-19 07:36:38,628 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2023-11-19 07:36:38,628 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:36:38,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 5/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2023-11-19 07:36:38,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 1020 [2023-11-19 07:36:40,597 INFO L134 LiptonReduction]: Checked pairs total: 1555 [2023-11-19 07:36:40,597 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-11-19 07:36:40,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:40,635 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;@dc49941, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:40,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 07:36:40,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:40,644 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:36:40,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:40,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:40,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:36:40,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:36:40,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash 258769, now seen corresponding path program 1 times [2023-11-19 07:36:40,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934503084] [2023-11-19 07:36:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:40,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:40,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934503084] [2023-11-19 07:36:40,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934503084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:40,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:40,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:40,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424196682] [2023-11-19 07:36:40,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:40,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:41,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:41,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 126 [2023-11-19 07:36:41,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:41,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 126 [2023-11-19 07:36:41,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:41,135 INFO L124 PetriNetUnfolderBase]: 18/68 cut-off events. [2023-11-19 07:36:41,135 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:36:41,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 68 events. 18/68 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 210 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 99. Up to 48 conditions per place. [2023-11-19 07:36:41,138 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 15 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-19 07:36:41,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 83 flow [2023-11-19 07:36:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-19 07:36:41,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2023-11-19 07:36:41,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-19 07:36:41,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-19 07:36:41,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:41,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-19 07:36:41,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,187 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 43 flow. Second operand 3 states and 202 transitions. [2023-11-19 07:36:41,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 83 flow [2023-11-19 07:36:41,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 83 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:41,193 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 49 flow [2023-11-19 07:36:41,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-11-19 07:36:41,199 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2023-11-19 07:36:41,200 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 49 flow [2023-11-19 07:36:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:41,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:36:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:41,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:36:41,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash -886982754, now seen corresponding path program 1 times [2023-11-19 07:36:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:41,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408772867] [2023-11-19 07:36:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:41,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:41,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408772867] [2023-11-19 07:36:41,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408772867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:41,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:41,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639208955] [2023-11-19 07:36:41,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:41,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:41,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:41,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 126 [2023-11-19 07:36:41,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:41,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 126 [2023-11-19 07:36:41,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:41,395 INFO L124 PetriNetUnfolderBase]: 20/71 cut-off events. [2023-11-19 07:36:41,397 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:36:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 71 events. 20/71 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 221 event pairs, 13 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 122. Up to 48 conditions per place. [2023-11-19 07:36:41,399 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2023-11-19 07:36:41,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 24 transitions, 110 flow [2023-11-19 07:36:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-11-19 07:36:41,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2023-11-19 07:36:41,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-11-19 07:36:41,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-11-19 07:36:41,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:41,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-11-19 07:36:41,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,412 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 49 flow. Second operand 3 states and 202 transitions. [2023-11-19 07:36:41,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 24 transitions, 110 flow [2023-11-19 07:36:41,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 24 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:41,414 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 64 flow [2023-11-19 07:36:41,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-19 07:36:41,415 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-11-19 07:36:41,415 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 64 flow [2023-11-19 07:36:41,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:41,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:36:41,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:41,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 07:36:41,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -886980422, now seen corresponding path program 1 times [2023-11-19 07:36:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764861092] [2023-11-19 07:36:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:41,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:41,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:41,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:41,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:41,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-19 07:36:41,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2023-11-19 07:36:41,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2023-11-19 07:36:41,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2023-11-19 07:36:41,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2023-11-19 07:36:41,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:41,518 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 07:36:41,522 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:36:41,522 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:36:41,558 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:36:41,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 190 flow [2023-11-19 07:36:41,615 INFO L124 PetriNetUnfolderBase]: 10/178 cut-off events. [2023-11-19 07:36:41,615 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:36:41,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 178 events. 10/178 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 446 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2023-11-19 07:36:41,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 87 transitions, 190 flow [2023-11-19 07:36:41,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 190 flow [2023-11-19 07:36:41,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:41,621 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 190 flow [2023-11-19 07:36:41,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 190 flow [2023-11-19 07:36:41,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 190 flow [2023-11-19 07:36:41,654 INFO L124 PetriNetUnfolderBase]: 10/178 cut-off events. [2023-11-19 07:36:41,654 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:36:41,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 178 events. 10/178 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 446 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2023-11-19 07:36:41,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 2820 [2023-11-19 07:36:43,394 INFO L134 LiptonReduction]: Checked pairs total: 5410 [2023-11-19 07:36:43,395 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-11-19 07:36:43,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:43,399 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;@dc49941, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:43,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:36:43,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:43,401 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:36:43,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:43,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:43,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:36:43,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:43,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash 422739, now seen corresponding path program 1 times [2023-11-19 07:36:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659229968] [2023-11-19 07:36:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:43,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659229968] [2023-11-19 07:36:43,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659229968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667588285] [2023-11-19 07:36:43,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:43,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:43,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:43,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 148 [2023-11-19 07:36:43,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:43,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 148 [2023-11-19 07:36:43,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:43,648 INFO L124 PetriNetUnfolderBase]: 457/901 cut-off events. [2023-11-19 07:36:43,648 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-19 07:36:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 901 events. 457/901 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4583 event pairs, 205 based on Foata normal form. 0/785 useless extension candidates. Maximal degree in co-relation 286. Up to 787 conditions per place. [2023-11-19 07:36:43,657 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 27 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-19 07:36:43,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 146 flow [2023-11-19 07:36:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-11-19 07:36:43,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-11-19 07:36:43,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-11-19 07:36:43,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-11-19 07:36:43,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:43,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-11-19 07:36:43,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,664 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 3 states and 259 transitions. [2023-11-19 07:36:43,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 146 flow [2023-11-19 07:36:43,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:43,667 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 86 flow [2023-11-19 07:36:43,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-19 07:36:43,668 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-11-19 07:36:43,668 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 86 flow [2023-11-19 07:36:43,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:43,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:43,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:43,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash -680982015, now seen corresponding path program 1 times [2023-11-19 07:36:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065343322] [2023-11-19 07:36:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065343322] [2023-11-19 07:36:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065343322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571454751] [2023-11-19 07:36:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:43,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 148 [2023-11-19 07:36:43,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:43,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 148 [2023-11-19 07:36:43,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:43,911 INFO L124 PetriNetUnfolderBase]: 549/1049 cut-off events. [2023-11-19 07:36:43,911 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-19 07:36:43,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 1049 events. 549/1049 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5512 event pairs, 436 based on Foata normal form. 0/938 useless extension candidates. Maximal degree in co-relation 2094. Up to 835 conditions per place. [2023-11-19 07:36:43,921 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 36 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-19 07:36:43,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 213 flow [2023-11-19 07:36:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-19 07:36:43,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2023-11-19 07:36:43,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-19 07:36:43,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-19 07:36:43,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:43,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-19 07:36:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,935 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 86 flow. Second operand 3 states and 261 transitions. [2023-11-19 07:36:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 213 flow [2023-11-19 07:36:43,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:43,940 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 110 flow [2023-11-19 07:36:43,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-11-19 07:36:43,943 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-11-19 07:36:43,943 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 110 flow [2023-11-19 07:36:43,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:43,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:43,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:43,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,944 INFO L85 PathProgramCache]: Analyzing trace with hash 258403156, now seen corresponding path program 1 times [2023-11-19 07:36:43,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081686343] [2023-11-19 07:36:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:44,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:44,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081686343] [2023-11-19 07:36:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081686343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:44,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654228843] [2023-11-19 07:36:44,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:44,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 148 [2023-11-19 07:36:44,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:44,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 148 [2023-11-19 07:36:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:44,298 INFO L124 PetriNetUnfolderBase]: 370/741 cut-off events. [2023-11-19 07:36:44,298 INFO L125 PetriNetUnfolderBase]: For 295/309 co-relation queries the response was YES. [2023-11-19 07:36:44,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 741 events. 370/741 cut-off events. For 295/309 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3528 event pairs, 192 based on Foata normal form. 47/773 useless extension candidates. Maximal degree in co-relation 677. Up to 388 conditions per place. [2023-11-19 07:36:44,305 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 41 selfloop transitions, 4 changer transitions 8/60 dead transitions. [2023-11-19 07:36:44,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 299 flow [2023-11-19 07:36:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-11-19 07:36:44,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793918918918919 [2023-11-19 07:36:44,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-11-19 07:36:44,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-11-19 07:36:44,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:44,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-11-19 07:36:44,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,313 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 110 flow. Second operand 4 states and 343 transitions. [2023-11-19 07:36:44,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 299 flow [2023-11-19 07:36:44,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:44,317 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 124 flow [2023-11-19 07:36:44,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-19 07:36:44,320 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-11-19 07:36:44,321 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 124 flow [2023-11-19 07:36:44,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:44,321 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:36:44,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:44,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:44,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:44,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1258121777, now seen corresponding path program 1 times [2023-11-19 07:36:44,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:44,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394387982] [2023-11-19 07:36:44,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:44,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:44,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:44,362 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:44,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-19 07:36:44,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-19 07:36:44,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-19 07:36:44,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-19 07:36:44,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-19 07:36:44,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-19 07:36:44,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:44,367 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 07:36:44,368 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:36:44,368 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 07:36:44,388 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:36:44,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 235 flow [2023-11-19 07:36:44,428 INFO L124 PetriNetUnfolderBase]: 20/311 cut-off events. [2023-11-19 07:36:44,429 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:36:44,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 311 events. 20/311 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 968 event pairs, 1 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2023-11-19 07:36:44,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 104 transitions, 235 flow [2023-11-19 07:36:44,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 104 transitions, 235 flow [2023-11-19 07:36:44,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:44,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 104 transitions, 235 flow [2023-11-19 07:36:44,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 104 transitions, 235 flow [2023-11-19 07:36:44,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 235 flow [2023-11-19 07:36:44,469 INFO L124 PetriNetUnfolderBase]: 20/311 cut-off events. [2023-11-19 07:36:44,469 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-19 07:36:44,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 311 events. 20/311 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 968 event pairs, 1 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 186. Up to 16 conditions per place. [2023-11-19 07:36:44,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 5040 [2023-11-19 07:36:46,200 INFO L134 LiptonReduction]: Checked pairs total: 11119 [2023-11-19 07:36:46,201 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-19 07:36:46,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:46,204 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;@dc49941, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:46,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-19 07:36:46,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:46,206 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-19 07:36:46,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:46,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:46,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:36:46,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:46,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 612369, now seen corresponding path program 1 times [2023-11-19 07:36:46,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:46,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581167359] [2023-11-19 07:36:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:46,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581167359] [2023-11-19 07:36:46,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581167359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:46,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:46,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:46,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215974098] [2023-11-19 07:36:46,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:46,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 174 [2023-11-19 07:36:46,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:46,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 174 [2023-11-19 07:36:46,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:46,964 INFO L124 PetriNetUnfolderBase]: 3373/5821 cut-off events. [2023-11-19 07:36:46,964 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-11-19 07:36:46,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11123 conditions, 5821 events. 3373/5821 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 37957 event pairs, 2165 based on Foata normal form. 0/5282 useless extension candidates. Maximal degree in co-relation 1519. Up to 5034 conditions per place. [2023-11-19 07:36:47,013 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-19 07:36:47,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 179 flow [2023-11-19 07:36:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-19 07:36:47,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578544061302682 [2023-11-19 07:36:47,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-19 07:36:47,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-19 07:36:47,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:47,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-19 07:36:47,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:47,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:47,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:47,020 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 103 flow. Second operand 3 states and 302 transitions. [2023-11-19 07:36:47,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 179 flow [2023-11-19 07:36:47,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:47,023 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 113 flow [2023-11-19 07:36:47,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-19 07:36:47,024 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-11-19 07:36:47,024 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 113 flow [2023-11-19 07:36:47,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:47,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:47,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:47,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1506494345, now seen corresponding path program 1 times [2023-11-19 07:36:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:47,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118401789] [2023-11-19 07:36:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118401789] [2023-11-19 07:36:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118401789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:47,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:47,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:47,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766909049] [2023-11-19 07:36:47,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:47,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 174 [2023-11-19 07:36:47,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:47,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:47,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 174 [2023-11-19 07:36:47,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:48,324 INFO L124 PetriNetUnfolderBase]: 6067/9611 cut-off events. [2023-11-19 07:36:48,325 INFO L125 PetriNetUnfolderBase]: For 1266/1266 co-relation queries the response was YES. [2023-11-19 07:36:48,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19528 conditions, 9611 events. 6067/9611 cut-off events. For 1266/1266 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 59832 event pairs, 4931 based on Foata normal form. 0/8789 useless extension candidates. Maximal degree in co-relation 19477. Up to 7918 conditions per place. [2023-11-19 07:36:48,410 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 49 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-19 07:36:48,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 292 flow [2023-11-19 07:36:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-11-19 07:36:48,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60727969348659 [2023-11-19 07:36:48,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-11-19 07:36:48,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-11-19 07:36:48,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:48,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-11-19 07:36:48,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,417 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 113 flow. Second operand 3 states and 317 transitions. [2023-11-19 07:36:48,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 292 flow [2023-11-19 07:36:48,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:48,421 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 144 flow [2023-11-19 07:36:48,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-19 07:36:48,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-11-19 07:36:48,423 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 144 flow [2023-11-19 07:36:48,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:48,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:48,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:48,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:48,425 INFO L85 PathProgramCache]: Analyzing trace with hash 408763792, now seen corresponding path program 1 times [2023-11-19 07:36:48,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:48,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110476243] [2023-11-19 07:36:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:48,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:48,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110476243] [2023-11-19 07:36:48,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110476243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:48,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:48,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:48,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737042180] [2023-11-19 07:36:48,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:48,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:48,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 174 [2023-11-19 07:36:48,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:48,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 174 [2023-11-19 07:36:48,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:49,343 INFO L124 PetriNetUnfolderBase]: 3544/6127 cut-off events. [2023-11-19 07:36:49,344 INFO L125 PetriNetUnfolderBase]: For 1741/2216 co-relation queries the response was YES. [2023-11-19 07:36:49,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13758 conditions, 6127 events. 3544/6127 cut-off events. For 1741/2216 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 39914 event pairs, 1832 based on Foata normal form. 615/6547 useless extension candidates. Maximal degree in co-relation 5212. Up to 3048 conditions per place. [2023-11-19 07:36:49,389 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 62 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-11-19 07:36:49,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 375 flow [2023-11-19 07:36:49,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:36:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 415 transitions. [2023-11-19 07:36:49,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5962643678160919 [2023-11-19 07:36:49,393 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 415 transitions. [2023-11-19 07:36:49,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 415 transitions. [2023-11-19 07:36:49,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:49,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 415 transitions. [2023-11-19 07:36:49,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,400 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,400 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 144 flow. Second operand 4 states and 415 transitions. [2023-11-19 07:36:49,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 375 flow [2023-11-19 07:36:49,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:49,410 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 157 flow [2023-11-19 07:36:49,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-19 07:36:49,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-11-19 07:36:49,412 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 157 flow [2023-11-19 07:36:49,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:49,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:49,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:49,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:49,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1138423198, now seen corresponding path program 1 times [2023-11-19 07:36:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:49,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317431665] [2023-11-19 07:36:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:36:49,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317431665] [2023-11-19 07:36:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317431665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:49,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:49,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817392983] [2023-11-19 07:36:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:49,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:49,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 174 [2023-11-19 07:36:49,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:49,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 174 [2023-11-19 07:36:49,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:50,756 INFO L124 PetriNetUnfolderBase]: 5873/9526 cut-off events. [2023-11-19 07:36:50,756 INFO L125 PetriNetUnfolderBase]: For 5026/5151 co-relation queries the response was YES. [2023-11-19 07:36:50,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22629 conditions, 9526 events. 5873/9526 cut-off events. For 5026/5151 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 60141 event pairs, 3788 based on Foata normal form. 0/9072 useless extension candidates. Maximal degree in co-relation 8842. Up to 6762 conditions per place. [2023-11-19 07:36:50,828 INFO L140 encePairwiseOnDemand]: 167/174 looper letters, 53 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2023-11-19 07:36:50,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 378 flow [2023-11-19 07:36:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-11-19 07:36:50,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60727969348659 [2023-11-19 07:36:50,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-11-19 07:36:50,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-11-19 07:36:50,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:50,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-11-19 07:36:50,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:50,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:50,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:50,835 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 157 flow. Second operand 3 states and 317 transitions. [2023-11-19 07:36:50,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 378 flow [2023-11-19 07:36:50,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:50,851 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 231 flow [2023-11-19 07:36:50,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-11-19 07:36:50,852 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-19 07:36:50,853 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 231 flow [2023-11-19 07:36:50,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:50,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:50,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:50,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:50,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:50,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1209102463, now seen corresponding path program 1 times [2023-11-19 07:36:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393361518] [2023-11-19 07:36:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:36:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393361518] [2023-11-19 07:36:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393361518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:50,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:50,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195492172] [2023-11-19 07:36:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:50,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 174 [2023-11-19 07:36:50,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:50,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:50,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 174 [2023-11-19 07:36:50,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:51,187 INFO L124 PetriNetUnfolderBase]: 712/1720 cut-off events. [2023-11-19 07:36:51,187 INFO L125 PetriNetUnfolderBase]: For 1327/1337 co-relation queries the response was YES. [2023-11-19 07:36:51,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4575 conditions, 1720 events. 712/1720 cut-off events. For 1327/1337 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11417 event pairs, 162 based on Foata normal form. 347/2027 useless extension candidates. Maximal degree in co-relation 1615. Up to 1106 conditions per place. [2023-11-19 07:36:51,199 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 41 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-11-19 07:36:51,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 346 flow [2023-11-19 07:36:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-19 07:36:51,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919540229885057 [2023-11-19 07:36:51,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-19 07:36:51,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-19 07:36:51,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:51,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-19 07:36:51,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,206 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 231 flow. Second operand 3 states and 309 transitions. [2023-11-19 07:36:51,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 346 flow [2023-11-19 07:36:51,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 334 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:51,215 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 185 flow [2023-11-19 07:36:51,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-19 07:36:51,216 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-19 07:36:51,217 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 185 flow [2023-11-19 07:36:51,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:51,217 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:36:51,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:51,218 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-19 07:36:51,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:51,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2120784036, now seen corresponding path program 1 times [2023-11-19 07:36:51,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:51,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734968401] [2023-11-19 07:36:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:51,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:36:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:36:51,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:36:51,268 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:36:51,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-19 07:36:51,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-19 07:36:51,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-19 07:36:51,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-19 07:36:51,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-19 07:36:51,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-19 07:36:51,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-19 07:36:51,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:36:51,270 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 07:36:51,271 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:36:51,271 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 07:36:51,305 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:36:51,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 121 transitions, 282 flow [2023-11-19 07:36:51,424 INFO L124 PetriNetUnfolderBase]: 42/552 cut-off events. [2023-11-19 07:36:51,424 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:36:51,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 552 events. 42/552 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2207 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 331. Up to 32 conditions per place. [2023-11-19 07:36:51,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 121 transitions, 282 flow [2023-11-19 07:36:51,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 121 transitions, 282 flow [2023-11-19 07:36:51,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:51,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 121 transitions, 282 flow [2023-11-19 07:36:51,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 121 transitions, 282 flow [2023-11-19 07:36:51,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 121 transitions, 282 flow [2023-11-19 07:36:51,499 INFO L124 PetriNetUnfolderBase]: 42/552 cut-off events. [2023-11-19 07:36:51,499 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-19 07:36:51,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 552 events. 42/552 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2207 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 331. Up to 32 conditions per place. [2023-11-19 07:36:51,522 INFO L119 LiptonReduction]: Number of co-enabled transitions 7800 [2023-11-19 07:36:53,454 INFO L134 LiptonReduction]: Checked pairs total: 16050 [2023-11-19 07:36:53,454 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-11-19 07:36:53,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:53,456 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;@dc49941, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:53,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-19 07:36:53,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:53,458 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-19 07:36:53,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:53,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:36:53,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:36:53,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 825961, now seen corresponding path program 1 times [2023-11-19 07:36:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115781399] [2023-11-19 07:36:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115781399] [2023-11-19 07:36:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115781399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629369746] [2023-11-19 07:36:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:53,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:53,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 200 [2023-11-19 07:36:53,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:53,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:53,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 200 [2023-11-19 07:36:53,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:57,754 INFO L124 PetriNetUnfolderBase]: 26238/40366 cut-off events. [2023-11-19 07:36:57,755 INFO L125 PetriNetUnfolderBase]: For 4016/4016 co-relation queries the response was YES. [2023-11-19 07:36:57,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78051 conditions, 40366 events. 26238/40366 cut-off events. For 4016/4016 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 296800 event pairs, 19276 based on Foata normal form. 0/37356 useless extension candidates. Maximal degree in co-relation 11158. Up to 35834 conditions per place. [2023-11-19 07:36:57,995 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 37 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-19 07:36:57,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 220 flow [2023-11-19 07:36:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-11-19 07:36:57,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5983333333333334 [2023-11-19 07:36:57,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-11-19 07:36:57,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-11-19 07:36:57,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:57,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-11-19 07:36:58,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,003 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 132 flow. Second operand 3 states and 359 transitions. [2023-11-19 07:36:58,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 220 flow [2023-11-19 07:36:58,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:36:58,006 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 142 flow [2023-11-19 07:36:58,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-19 07:36:58,007 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2023-11-19 07:36:58,007 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 142 flow [2023-11-19 07:36:58,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:58,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:36:58,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:36:58,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1938282162, now seen corresponding path program 1 times [2023-11-19 07:36:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886566316] [2023-11-19 07:36:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:58,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886566316] [2023-11-19 07:36:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886566316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:58,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:58,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653895094] [2023-11-19 07:36:58,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:58,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 200 [2023-11-19 07:36:58,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:58,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:58,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 200 [2023-11-19 07:36:58,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:05,811 INFO L124 PetriNetUnfolderBase]: 63239/89865 cut-off events. [2023-11-19 07:37:05,811 INFO L125 PetriNetUnfolderBase]: For 12171/12171 co-relation queries the response was YES. [2023-11-19 07:37:05,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182718 conditions, 89865 events. 63239/89865 cut-off events. For 12171/12171 co-relation queries the response was YES. Maximal size of possible extension queue 2435. Compared 619942 event pairs, 44385 based on Foata normal form. 0/83611 useless extension candidates. Maximal degree in co-relation 182666. Up to 66785 conditions per place. [2023-11-19 07:37:06,341 INFO L140 encePairwiseOnDemand]: 192/200 looper letters, 62 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-11-19 07:37:06,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 379 flow [2023-11-19 07:37:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-11-19 07:37:06,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6233333333333333 [2023-11-19 07:37:06,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-11-19 07:37:06,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-11-19 07:37:06,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:06,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-11-19 07:37:06,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:06,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:06,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:06,348 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 142 flow. Second operand 3 states and 374 transitions. [2023-11-19 07:37:06,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 379 flow [2023-11-19 07:37:06,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:06,353 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 194 flow [2023-11-19 07:37:06,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-19 07:37:06,354 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-11-19 07:37:06,355 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 194 flow [2023-11-19 07:37:06,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:06,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:06,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:37:06,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:37:06,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash -111108733, now seen corresponding path program 1 times [2023-11-19 07:37:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509725257] [2023-11-19 07:37:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:06,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:06,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509725257] [2023-11-19 07:37:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509725257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:06,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:06,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:06,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507230194] [2023-11-19 07:37:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:37:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:37:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:37:06,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 200 [2023-11-19 07:37:06,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:06,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:06,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 200 [2023-11-19 07:37:06,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:11,490 INFO L124 PetriNetUnfolderBase]: 39034/58703 cut-off events. [2023-11-19 07:37:11,490 INFO L125 PetriNetUnfolderBase]: For 30287/35833 co-relation queries the response was YES. [2023-11-19 07:37:11,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136211 conditions, 58703 events. 39034/58703 cut-off events. For 30287/35833 co-relation queries the response was YES. Maximal size of possible extension queue 1696. Compared 437121 event pairs, 19755 based on Foata normal form. 3917/60273 useless extension candidates. Maximal degree in co-relation 41808. Up to 30524 conditions per place. [2023-11-19 07:37:11,874 INFO L140 encePairwiseOnDemand]: 195/200 looper letters, 80 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-11-19 07:37:11,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 502 flow [2023-11-19 07:37:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:37:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:37:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2023-11-19 07:37:11,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2023-11-19 07:37:11,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2023-11-19 07:37:11,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2023-11-19 07:37:11,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:11,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2023-11-19 07:37:11,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:11,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:11,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:11,885 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 194 flow. Second operand 4 states and 490 transitions. [2023-11-19 07:37:11,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 502 flow [2023-11-19 07:37:11,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:11,981 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 198 flow [2023-11-19 07:37:11,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-19 07:37:11,982 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-19 07:37:11,982 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 198 flow [2023-11-19 07:37:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:11,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:11,982 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:11,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:37:11,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:37:11,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1144443582, now seen corresponding path program 1 times [2023-11-19 07:37:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982509653] [2023-11-19 07:37:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:37:12,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982509653] [2023-11-19 07:37:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982509653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:12,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95407234] [2023-11-19 07:37:12,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:12,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:12,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 200 [2023-11-19 07:37:12,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:12,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:12,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 200 [2023-11-19 07:37:12,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:21,521 INFO L124 PetriNetUnfolderBase]: 68551/98723 cut-off events. [2023-11-19 07:37:21,521 INFO L125 PetriNetUnfolderBase]: For 50689/51838 co-relation queries the response was YES. [2023-11-19 07:37:21,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237494 conditions, 98723 events. 68551/98723 cut-off events. For 50689/51838 co-relation queries the response was YES. Maximal size of possible extension queue 2465. Compared 700389 event pairs, 43413 based on Foata normal form. 0/94612 useless extension candidates. Maximal degree in co-relation 84828. Up to 73214 conditions per place. [2023-11-19 07:37:22,042 INFO L140 encePairwiseOnDemand]: 192/200 looper letters, 69 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-11-19 07:37:22,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 493 flow [2023-11-19 07:37:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-19 07:37:22,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216666666666667 [2023-11-19 07:37:22,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-19 07:37:22,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-19 07:37:22,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:22,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-19 07:37:22,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:22,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:22,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:22,048 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 198 flow. Second operand 3 states and 373 transitions. [2023-11-19 07:37:22,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 493 flow [2023-11-19 07:37:22,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:22,486 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 292 flow [2023-11-19 07:37:22,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-11-19 07:37:22,487 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-11-19 07:37:22,487 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 292 flow [2023-11-19 07:37:22,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:22,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:22,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:22,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:37:22,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:37:22,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1491786065, now seen corresponding path program 1 times [2023-11-19 07:37:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182870673] [2023-11-19 07:37:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:37:22,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:22,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182870673] [2023-11-19 07:37:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182870673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:22,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:22,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:22,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14938487] [2023-11-19 07:37:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:22,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:22,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:22,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 200 [2023-11-19 07:37:22,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:22,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:22,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 200 [2023-11-19 07:37:22,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:23,429 INFO L124 PetriNetUnfolderBase]: 2939/6858 cut-off events. [2023-11-19 07:37:23,429 INFO L125 PetriNetUnfolderBase]: For 5628/5676 co-relation queries the response was YES. [2023-11-19 07:37:23,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 6858 events. 2939/6858 cut-off events. For 5628/5676 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 58475 event pairs, 226 based on Foata normal form. 2135/8809 useless extension candidates. Maximal degree in co-relation 6295. Up to 4407 conditions per place. [2023-11-19 07:37:23,462 INFO L140 encePairwiseOnDemand]: 192/200 looper letters, 47 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2023-11-19 07:37:23,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 419 flow [2023-11-19 07:37:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-11-19 07:37:23,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595 [2023-11-19 07:37:23,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-11-19 07:37:23,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-11-19 07:37:23,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:23,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-11-19 07:37:23,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,468 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 292 flow. Second operand 3 states and 357 transitions. [2023-11-19 07:37:23,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 419 flow [2023-11-19 07:37:23,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 69 transitions, 407 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:23,486 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 230 flow [2023-11-19 07:37:23,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-11-19 07:37:23,487 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-11-19 07:37:23,487 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 230 flow [2023-11-19 07:37:23,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:23,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:23,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:37:23,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:37:23,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1548125294, now seen corresponding path program 1 times [2023-11-19 07:37:23,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:23,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343581025] [2023-11-19 07:37:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:23,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:37:23,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:23,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343581025] [2023-11-19 07:37:23,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343581025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:23,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:23,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:23,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089446373] [2023-11-19 07:37:23,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:23,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:23,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:23,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:23,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 200 [2023-11-19 07:37:23,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:23,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:23,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 200 [2023-11-19 07:37:23,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:24,291 INFO L124 PetriNetUnfolderBase]: 3429/7946 cut-off events. [2023-11-19 07:37:24,291 INFO L125 PetriNetUnfolderBase]: For 6650/6688 co-relation queries the response was YES. [2023-11-19 07:37:24,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21397 conditions, 7946 events. 3429/7946 cut-off events. For 6650/6688 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 67606 event pairs, 2830 based on Foata normal form. 0/7552 useless extension candidates. Maximal degree in co-relation 5417. Up to 6102 conditions per place. [2023-11-19 07:37:24,333 INFO L140 encePairwiseOnDemand]: 195/200 looper letters, 55 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2023-11-19 07:37:24,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 67 transitions, 412 flow [2023-11-19 07:37:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-11-19 07:37:24,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595 [2023-11-19 07:37:24,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-11-19 07:37:24,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-11-19 07:37:24,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:24,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-11-19 07:37:24,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,340 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 230 flow. Second operand 3 states and 357 transitions. [2023-11-19 07:37:24,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 67 transitions, 412 flow [2023-11-19 07:37:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:37:24,356 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 257 flow [2023-11-19 07:37:24,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=257, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-11-19 07:37:24,357 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-19 07:37:24,357 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 257 flow [2023-11-19 07:37:24,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:24,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:24,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:37:24,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:37:24,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1766469299, now seen corresponding path program 1 times [2023-11-19 07:37:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136760765] [2023-11-19 07:37:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:37:24,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:24,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136760765] [2023-11-19 07:37:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136760765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:24,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:24,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:24,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704342578] [2023-11-19 07:37:24,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:24,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:37:24,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:24,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 200 [2023-11-19 07:37:24,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:24,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:24,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 200 [2023-11-19 07:37:24,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:25,778 INFO L124 PetriNetUnfolderBase]: 4733/10244 cut-off events. [2023-11-19 07:37:25,778 INFO L125 PetriNetUnfolderBase]: For 9393/9450 co-relation queries the response was YES. [2023-11-19 07:37:25,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29049 conditions, 10244 events. 4733/10244 cut-off events. For 9393/9450 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 85620 event pairs, 2857 based on Foata normal form. 0/9943 useless extension candidates. Maximal degree in co-relation 9890. Up to 6857 conditions per place. [2023-11-19 07:37:25,845 INFO L140 encePairwiseOnDemand]: 193/200 looper letters, 62 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2023-11-19 07:37:25,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 485 flow [2023-11-19 07:37:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:37:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-19 07:37:25,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216666666666667 [2023-11-19 07:37:25,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-19 07:37:25,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-19 07:37:25,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:25,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-19 07:37:25,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:25,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:25,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:25,855 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 257 flow. Second operand 3 states and 373 transitions. [2023-11-19 07:37:25,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 485 flow [2023-11-19 07:37:25,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 469 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:37:25,898 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 321 flow [2023-11-19 07:37:25,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-11-19 07:37:25,899 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-11-19 07:37:25,899 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 321 flow [2023-11-19 07:37:25,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:25,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:25,900 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:25,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:37:25,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-19 07:37:25,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:25,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1809018183, now seen corresponding path program 1 times [2023-11-19 07:37:25,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:25,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869643428] [2023-11-19 07:37:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:25,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:26,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:26,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869643428] [2023-11-19 07:37:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869643428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:26,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690753136] [2023-11-19 07:37:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:26,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:26,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:26,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd05270f-2bcb-4160-8741-d8b5b2fd499a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:26,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:37:26,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:26,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:26,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690753136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-19 07:37:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698592060] [2023-11-19 07:37:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:26,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:37:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:26,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:37:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:37:26,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 200 [2023-11-19 07:37:26,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 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) [2023-11-19 07:37:26,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:37:26,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 200 [2023-11-19 07:37:26,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand