./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/indexer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/indexer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:32:54,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:32:54,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:32:54,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:32:54,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:32:54,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:32:54,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:32:54,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:32:54,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:32:54,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:32:54,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:32:54,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:32:54,830 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:32:54,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:32:54,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:32:54,835 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:32:54,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:32:54,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:32:54,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:32:54,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:32:54,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:32:54,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:32:54,844 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:32:54,845 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:32:54,846 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:32:54,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:32:54,846 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:32:54,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:32:54,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:32:54,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:32:54,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:32:54,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:32:54,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:32:54,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:32:54,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:32:54,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:32:54,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:32:54,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:32:54,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:32:54,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:32:54,852 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:32:54,853 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_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c [2023-11-06 22:32:55,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:32:55,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:32:55,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:32:55,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:32:55,199 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:32:55,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/indexer.i [2023-11-06 22:32:58,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:32:58,545 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:32:58,545 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/sv-benchmarks/c/pthread/indexer.i [2023-11-06 22:32:58,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/data/870715c52/edf7eeaa9af54ee8afa018695739befc/FLAG9d9e3139f [2023-11-06 22:32:58,591 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/data/870715c52/edf7eeaa9af54ee8afa018695739befc [2023-11-06 22:32:58,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:32:58,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:32:58,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:32:58,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:32:58,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:32:58,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:58" (1/1) ... [2023-11-06 22:32:58,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757fed61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:58, skipping insertion in model container [2023-11-06 22:32:58,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:58" (1/1) ... [2023-11-06 22:32:58,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:32:59,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:32:59,298 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:32:59,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:32:59,405 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:32:59,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59 WrapperNode [2023-11-06 22:32:59,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:32:59,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:32:59,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:32:59,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:32:59,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,492 INFO L138 Inliner]: procedures = 269, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2023-11-06 22:32:59,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:32:59,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:32:59,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:32:59,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:32:59,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:32:59,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:32:59,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:32:59,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:32:59,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (1/1) ... [2023-11-06 22:32:59,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:32:59,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:59,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:32:59,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:32:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:32:59,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:32:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:32:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2023-11-06 22:32:59,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2023-11-06 22:32:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:32:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:32:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:32:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:32:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:32:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:32:59,650 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:32:59,883 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:32:59,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:33:00,305 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:33:00,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:33:00,314 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:33:00,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:00 BoogieIcfgContainer [2023-11-06 22:33:00,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:33:00,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:33:00,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:33:00,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:33:00,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:32:58" (1/3) ... [2023-11-06 22:33:00,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78050b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:00, skipping insertion in model container [2023-11-06 22:33:00,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:59" (2/3) ... [2023-11-06 22:33:00,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78050b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:33:00, skipping insertion in model container [2023-11-06 22:33:00,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:00" (3/3) ... [2023-11-06 22:33:00,327 INFO L112 eAbstractionObserver]: Analyzing ICFG indexer.i [2023-11-06 22:33:00,337 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:33:00,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:33:00,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-06 22:33:00,350 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:33:00,465 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:33:00,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 156 transitions, 319 flow [2023-11-06 22:33:00,596 INFO L124 PetriNetUnfolderBase]: 19/194 cut-off events. [2023-11-06 22:33:00,596 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:33:00,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 19/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 354 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-06 22:33:00,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 156 transitions, 319 flow [2023-11-06 22:33:00,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 156 transitions, 319 flow [2023-11-06 22:33:00,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:33:00,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 156 transitions, 319 flow [2023-11-06 22:33:00,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 156 transitions, 319 flow [2023-11-06 22:33:00,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 156 transitions, 319 flow [2023-11-06 22:33:00,725 INFO L124 PetriNetUnfolderBase]: 19/194 cut-off events. [2023-11-06 22:33:00,725 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:33:00,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 19/194 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 354 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-06 22:33:00,738 INFO L119 LiptonReduction]: Number of co-enabled transitions 6864 [2023-11-06 22:33:04,793 INFO L134 LiptonReduction]: Checked pairs total: 16745 [2023-11-06 22:33:04,794 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-06 22:33:04,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:33:04,834 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3da3c4e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:33:04,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-06 22:33:04,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:33:04,841 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2023-11-06 22:33:04,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:33:04,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:04,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:04,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:04,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 232517987, now seen corresponding path program 1 times [2023-11-06 22:33:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117790218] [2023-11-06 22:33:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117790218] [2023-11-06 22:33:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117790218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:05,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:05,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568857672] [2023-11-06 22:33:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:05,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:05,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-11-06 22:33:05,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:05,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:05,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-11-06 22:33:05,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:05,493 INFO L124 PetriNetUnfolderBase]: 89/307 cut-off events. [2023-11-06 22:33:05,494 INFO L125 PetriNetUnfolderBase]: For 3/6 co-relation queries the response was YES. [2023-11-06 22:33:05,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 307 events. 89/307 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1305 event pairs, 41 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 444. Up to 118 conditions per place. [2023-11-06 22:33:05,498 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 37 selfloop transitions, 6 changer transitions 4/72 dead transitions. [2023-11-06 22:33:05,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 245 flow [2023-11-06 22:33:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-11-06 22:33:05,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-06 22:33:05,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-11-06 22:33:05,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-11-06 22:33:05,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:05,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-11-06 22:33:05,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:05,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:05,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:05,536 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 115 flow. Second operand 3 states and 440 transitions. [2023-11-06 22:33:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 245 flow [2023-11-06 22:33:05,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:05,542 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 129 flow [2023-11-06 22:33:05,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-06 22:33:05,549 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-06 22:33:05,549 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 129 flow [2023-11-06 22:33:05,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:05,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:05,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:05,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:33:05,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:05,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash 61958588, now seen corresponding path program 1 times [2023-11-06 22:33:05,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438015339] [2023-11-06 22:33:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438015339] [2023-11-06 22:33:05,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438015339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017626965] [2023-11-06 22:33:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:05,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:05,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:33:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:05,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:33:05,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:05,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:05,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017626965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:05,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:05,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 22:33:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907774415] [2023-11-06 22:33:05,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:05,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:33:05,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:33:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:33:06,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-06 22:33:06,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:06,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:06,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-06 22:33:06,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:06,154 INFO L124 PetriNetUnfolderBase]: 64/202 cut-off events. [2023-11-06 22:33:06,155 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 22:33:06,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 202 events. 64/202 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 737 event pairs, 0 based on Foata normal form. 13/191 useless extension candidates. Maximal degree in co-relation 318. Up to 111 conditions per place. [2023-11-06 22:33:06,158 INFO L140 encePairwiseOnDemand]: 270/275 looper letters, 34 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-06 22:33:06,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 226 flow [2023-11-06 22:33:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:33:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 795 transitions. [2023-11-06 22:33:06,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2023-11-06 22:33:06,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 795 transitions. [2023-11-06 22:33:06,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 795 transitions. [2023-11-06 22:33:06,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:06,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 795 transitions. [2023-11-06 22:33:06,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:06,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:06,197 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:06,197 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 129 flow. Second operand 6 states and 795 transitions. [2023-11-06 22:33:06,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 226 flow [2023-11-06 22:33:06,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:33:06,202 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 124 flow [2023-11-06 22:33:06,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-06 22:33:06,204 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-11-06 22:33:06,204 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 124 flow [2023-11-06 22:33:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:06,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:06,206 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:06,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 22:33:06,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:06,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1817985117, now seen corresponding path program 2 times [2023-11-06 22:33:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849315862] [2023-11-06 22:33:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:06,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:06,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849315862] [2023-11-06 22:33:06,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849315862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109580986] [2023-11-06 22:33:06,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:33:06,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:06,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:06,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:33:06,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:33:06,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:33:06,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:33:06,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:06,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:33:06,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 22:33:06,866 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:06,867 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-06 22:33:06,924 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:06,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-06 22:33:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:33:06,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109580986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-11-06 22:33:06,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905068941] [2023-11-06 22:33:06,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:06,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:33:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:06,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:33:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:33:07,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 275 [2023-11-06 22:33:07,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:07,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 275 [2023-11-06 22:33:07,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:07,565 INFO L124 PetriNetUnfolderBase]: 293/619 cut-off events. [2023-11-06 22:33:07,565 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-06 22:33:07,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 619 events. 293/619 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2446 event pairs, 87 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1219. Up to 458 conditions per place. [2023-11-06 22:33:07,570 INFO L140 encePairwiseOnDemand]: 256/275 looper letters, 82 selfloop transitions, 54 changer transitions 0/140 dead transitions. [2023-11-06 22:33:07,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 140 transitions, 588 flow [2023-11-06 22:33:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:33:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:33:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2023-11-06 22:33:07,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-11-06 22:33:07,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2023-11-06 22:33:07,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2023-11-06 22:33:07,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:07,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2023-11-06 22:33:07,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,587 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 124 flow. Second operand 7 states and 945 transitions. [2023-11-06 22:33:07,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 140 transitions, 588 flow [2023-11-06 22:33:07,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 140 transitions, 568 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:07,595 INFO L231 Difference]: Finished difference. Result has 54 places, 96 transitions, 406 flow [2023-11-06 22:33:07,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=54, PETRI_TRANSITIONS=96} [2023-11-06 22:33:07,597 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2023-11-06 22:33:07,597 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 96 transitions, 406 flow [2023-11-06 22:33:07,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:07,598 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:07,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:07,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:07,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash -553354503, now seen corresponding path program 1 times [2023-11-06 22:33:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:07,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580445468] [2023-11-06 22:33:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580445468] [2023-11-06 22:33:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580445468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27096747] [2023-11-06 22:33:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:07,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:07,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:07,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:33:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:08,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:33:08,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:08,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:08,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27096747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:08,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:08,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:33:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305598112] [2023-11-06 22:33:08,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:08,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:33:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:33:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:33:08,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-06 22:33:08,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 96 transitions, 406 flow. Second operand has 13 states, 13 states have (on average 126.53846153846153) internal successors, (1645), 13 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:08,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-06 22:33:08,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:08,594 INFO L124 PetriNetUnfolderBase]: 185/476 cut-off events. [2023-11-06 22:33:08,595 INFO L125 PetriNetUnfolderBase]: For 87/109 co-relation queries the response was YES. [2023-11-06 22:33:08,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 476 events. 185/476 cut-off events. For 87/109 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2036 event pairs, 11 based on Foata normal form. 8/444 useless extension candidates. Maximal degree in co-relation 1088. Up to 199 conditions per place. [2023-11-06 22:33:08,599 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 39 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2023-11-06 22:33:08,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 574 flow [2023-11-06 22:33:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:33:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:33:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1553 transitions. [2023-11-06 22:33:08,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706060606060606 [2023-11-06 22:33:08,606 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1553 transitions. [2023-11-06 22:33:08,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1553 transitions. [2023-11-06 22:33:08,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:08,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1553 transitions. [2023-11-06 22:33:08,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.41666666666666) internal successors, (1553), 12 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 275.0) internal successors, (3575), 13 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,621 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 275.0) internal successors, (3575), 13 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,621 INFO L175 Difference]: Start difference. First operand has 54 places, 96 transitions, 406 flow. Second operand 12 states and 1553 transitions. [2023-11-06 22:33:08,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 574 flow [2023-11-06 22:33:08,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 118 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:33:08,628 INFO L231 Difference]: Finished difference. Result has 64 places, 102 transitions, 457 flow [2023-11-06 22:33:08,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=457, PETRI_PLACES=64, PETRI_TRANSITIONS=102} [2023-11-06 22:33:08,630 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-06 22:33:08,630 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 102 transitions, 457 flow [2023-11-06 22:33:08,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 126.53846153846153) internal successors, (1645), 13 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:08,631 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:08,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:08,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:08,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:08,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash -524438439, now seen corresponding path program 2 times [2023-11-06 22:33:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690294031] [2023-11-06 22:33:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690294031] [2023-11-06 22:33:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690294031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:09,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528393872] [2023-11-06 22:33:09,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:33:09,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:09,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:09,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:09,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:33:09,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:33:09,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:33:09,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:33:09,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:09,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:33:09,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:33:09,385 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:09,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-06 22:33:09,437 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:33:09,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-11-06 22:33:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:33:09,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528393872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:09,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:09,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 17 [2023-11-06 22:33:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584062345] [2023-11-06 22:33:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:09,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:33:09,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:33:09,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:33:09,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-11-06 22:33:09,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 102 transitions, 457 flow. Second operand has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:09,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:09,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-11-06 22:33:09,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:10,012 INFO L124 PetriNetUnfolderBase]: 388/875 cut-off events. [2023-11-06 22:33:10,012 INFO L125 PetriNetUnfolderBase]: For 300/311 co-relation queries the response was YES. [2023-11-06 22:33:10,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 875 events. 388/875 cut-off events. For 300/311 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4158 event pairs, 46 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 2245. Up to 547 conditions per place. [2023-11-06 22:33:10,021 INFO L140 encePairwiseOnDemand]: 264/275 looper letters, 98 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2023-11-06 22:33:10,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 151 transitions, 892 flow [2023-11-06 22:33:10,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:33:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2023-11-06 22:33:10,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364 [2023-11-06 22:33:10,026 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2023-11-06 22:33:10,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2023-11-06 22:33:10,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:10,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2023-11-06 22:33:10,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:10,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:10,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:10,037 INFO L175 Difference]: Start difference. First operand has 64 places, 102 transitions, 457 flow. Second operand 6 states and 852 transitions. [2023-11-06 22:33:10,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 151 transitions, 892 flow [2023-11-06 22:33:10,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 151 transitions, 844 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-06 22:33:10,049 INFO L231 Difference]: Finished difference. Result has 69 places, 126 transitions, 663 flow [2023-11-06 22:33:10,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=69, PETRI_TRANSITIONS=126} [2023-11-06 22:33:10,052 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-06 22:33:10,055 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 126 transitions, 663 flow [2023-11-06 22:33:10,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:10,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:10,056 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:33:10,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:10,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:10,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -768915253, now seen corresponding path program 1 times [2023-11-06 22:33:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039863705] [2023-11-06 22:33:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:33:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039863705] [2023-11-06 22:33:10,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039863705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:10,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348330705] [2023-11-06 22:33:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:10,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:10,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:10,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:33:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:10,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:33:10,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:33:10,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:33:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348330705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:10,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-06 22:33:10,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785939708] [2023-11-06 22:33:10,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:33:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:33:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:33:11,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-06 22:33:11,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 126 transitions, 663 flow. Second operand has 25 states, 25 states have (on average 126.28) internal successors, (3157), 25 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:11,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-06 22:33:11,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:11,746 INFO L124 PetriNetUnfolderBase]: 274/715 cut-off events. [2023-11-06 22:33:11,747 INFO L125 PetriNetUnfolderBase]: For 467/507 co-relation queries the response was YES. [2023-11-06 22:33:11,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2021 conditions, 715 events. 274/715 cut-off events. For 467/507 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3576 event pairs, 17 based on Foata normal form. 11/654 useless extension candidates. Maximal degree in co-relation 1899. Up to 339 conditions per place. [2023-11-06 22:33:11,755 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 46 selfloop transitions, 25 changer transitions 0/155 dead transitions. [2023-11-06 22:33:11,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 155 transitions, 907 flow [2023-11-06 22:33:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:33:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:33:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3071 transitions. [2023-11-06 22:33:11,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46530303030303033 [2023-11-06 22:33:11,769 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3071 transitions. [2023-11-06 22:33:11,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3071 transitions. [2023-11-06 22:33:11,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:11,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3071 transitions. [2023-11-06 22:33:11,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.95833333333333) internal successors, (3071), 24 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 275.0) internal successors, (6875), 25 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,804 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 275.0) internal successors, (6875), 25 states have internal predecessors, (6875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,805 INFO L175 Difference]: Start difference. First operand has 69 places, 126 transitions, 663 flow. Second operand 24 states and 3071 transitions. [2023-11-06 22:33:11,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 155 transitions, 907 flow [2023-11-06 22:33:11,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 155 transitions, 883 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:11,817 INFO L231 Difference]: Finished difference. Result has 92 places, 138 transitions, 739 flow [2023-11-06 22:33:11,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=739, PETRI_PLACES=92, PETRI_TRANSITIONS=138} [2023-11-06 22:33:11,820 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2023-11-06 22:33:11,820 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 138 transitions, 739 flow [2023-11-06 22:33:11,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 126.28) internal successors, (3157), 25 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:11,822 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:11,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:12,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:12,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:12,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1694750488, now seen corresponding path program 1 times [2023-11-06 22:33:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:12,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550628908] [2023-11-06 22:33:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550628908] [2023-11-06 22:33:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550628908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666399834] [2023-11-06 22:33:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:12,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:12,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:33:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 22:33:12,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:13,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666399834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:13,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-06 22:33:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466986651] [2023-11-06 22:33:13,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-06 22:33:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:13,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-06 22:33:13,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-06 22:33:15,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-06 22:33:15,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 138 transitions, 739 flow. Second operand has 49 states, 49 states have (on average 126.16326530612245) internal successors, (6182), 49 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:15,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-06 22:33:15,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:15,316 INFO L124 PetriNetUnfolderBase]: 274/751 cut-off events. [2023-11-06 22:33:15,316 INFO L125 PetriNetUnfolderBase]: For 515/542 co-relation queries the response was YES. [2023-11-06 22:33:15,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 751 events. 274/751 cut-off events. For 515/542 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3525 event pairs, 52 based on Foata normal form. 3/684 useless extension candidates. Maximal degree in co-relation 1883. Up to 339 conditions per place. [2023-11-06 22:33:15,324 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 46 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2023-11-06 22:33:15,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 179 transitions, 1127 flow [2023-11-06 22:33:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 22:33:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-06 22:33:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 6107 transitions. [2023-11-06 22:33:15,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46265151515151515 [2023-11-06 22:33:15,349 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 6107 transitions. [2023-11-06 22:33:15,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 6107 transitions. [2023-11-06 22:33:15,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:15,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 6107 transitions. [2023-11-06 22:33:15,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 127.22916666666667) internal successors, (6107), 48 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 275.0) internal successors, (13475), 49 states have internal predecessors, (13475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,440 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 275.0) internal successors, (13475), 49 states have internal predecessors, (13475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,440 INFO L175 Difference]: Start difference. First operand has 92 places, 138 transitions, 739 flow. Second operand 48 states and 6107 transitions. [2023-11-06 22:33:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 179 transitions, 1127 flow [2023-11-06 22:33:15,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 179 transitions, 1003 flow, removed 49 selfloop flow, removed 11 redundant places. [2023-11-06 22:33:15,464 INFO L231 Difference]: Finished difference. Result has 128 places, 162 transitions, 859 flow [2023-11-06 22:33:15,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=859, PETRI_PLACES=128, PETRI_TRANSITIONS=162} [2023-11-06 22:33:15,466 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2023-11-06 22:33:15,466 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 162 transitions, 859 flow [2023-11-06 22:33:15,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 126.16326530612245) internal successors, (6182), 49 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:15,469 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:15,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:33:15,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:15,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:15,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1018523240, now seen corresponding path program 2 times [2023-11-06 22:33:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:15,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042275910] [2023-11-06 22:33:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:18,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:18,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042275910] [2023-11-06 22:33:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042275910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:18,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992679031] [2023-11-06 22:33:18,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:33:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:18,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:18,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:18,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:33:18,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:33:18,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:33:18,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 22:33:18,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:18,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992679031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:21,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2023-11-06 22:33:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92931188] [2023-11-06 22:33:21,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-06 22:33:21,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:21,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-06 22:33:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-06 22:33:24,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275 [2023-11-06 22:33:24,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 162 transitions, 859 flow. Second operand has 97 states, 97 states have (on average 126.08247422680412) internal successors, (12230), 97 states have internal predecessors, (12230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:24,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:24,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275 [2023-11-06 22:33:24,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:24,757 INFO L124 PetriNetUnfolderBase]: 274/799 cut-off events. [2023-11-06 22:33:24,758 INFO L125 PetriNetUnfolderBase]: For 515/542 co-relation queries the response was YES. [2023-11-06 22:33:24,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 799 events. 274/799 cut-off events. For 515/542 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3531 event pairs, 52 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1883. Up to 339 conditions per place. [2023-11-06 22:33:24,766 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 46 selfloop transitions, 97 changer transitions 0/227 dead transitions. [2023-11-06 22:33:24,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 227 transitions, 1487 flow [2023-11-06 22:33:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-06 22:33:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2023-11-06 22:33:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 12179 transitions. [2023-11-06 22:33:24,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46132575757575756 [2023-11-06 22:33:24,797 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 12179 transitions. [2023-11-06 22:33:24,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 12179 transitions. [2023-11-06 22:33:24,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:24,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 12179 transitions. [2023-11-06 22:33:24,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 126.86458333333333) internal successors, (12179), 96 states have internal predecessors, (12179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:24,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 275.0) internal successors, (26675), 97 states have internal predecessors, (26675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:24,883 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 275.0) internal successors, (26675), 97 states have internal predecessors, (26675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:24,883 INFO L175 Difference]: Start difference. First operand has 128 places, 162 transitions, 859 flow. Second operand 96 states and 12179 transitions. [2023-11-06 22:33:24,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 227 transitions, 1487 flow [2023-11-06 22:33:24,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 227 transitions, 1243 flow, removed 97 selfloop flow, removed 23 redundant places. [2023-11-06 22:33:24,897 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 1099 flow [2023-11-06 22:33:24,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=1099, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2023-11-06 22:33:24,899 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 150 predicate places. [2023-11-06 22:33:24,899 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 1099 flow [2023-11-06 22:33:24,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 126.08247422680412) internal successors, (12230), 97 states have internal predecessors, (12230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:24,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:24,928 INFO L208 CegarLoopForPetriNet]: trace histogram [94, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:24,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:33:25,136 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-11-06 22:33:25,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1734244712, now seen corresponding path program 3 times [2023-11-06 22:33:25,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:25,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310830266] [2023-11-06 22:33:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:25,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4471 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:33:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310830266] [2023-11-06 22:33:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310830266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813659294] [2023-11-06 22:33:31,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:33:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:31,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:31,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:31,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b21430d2-d690-405a-a9a3-6b9539d66af1/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process