./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.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_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/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_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/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_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:12:48,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:12:48,172 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:12:48,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:12:48,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:12:48,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:12:48,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:12:48,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:12:48,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:12:48,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:12:48,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:12:48,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:12:48,210 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:12:48,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:12:48,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:12:48,212 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:12:48,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:12:48,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:12:48,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:12:48,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:12:48,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:12:48,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:12:48,217 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:12:48,217 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:12:48,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:12:48,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:12:48,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:12:48,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:12:48,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:12:48,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:12:48,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:48,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:12:48,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:12:48,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:12:48,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:12:48,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:12:48,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:12:48,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:12:48,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:12:48,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:12:48,225 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:12:48,226 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_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2023-11-06 22:12:48,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:12:48,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:12:48,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:12:48,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:12:48,584 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:12:48,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-06 22:12:51,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:12:52,195 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:12:52,196 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/sv-benchmarks/c/pthread/queue_ok_longer.i [2023-11-06 22:12:52,218 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/data/e87afc8ff/05d065d949f14ddf9cfc26cbbd2179c7/FLAGa2e23508c [2023-11-06 22:12:52,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/data/e87afc8ff/05d065d949f14ddf9cfc26cbbd2179c7 [2023-11-06 22:12:52,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:12:52,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:12:52,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:52,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:12:52,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:12:52,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:52" (1/1) ... [2023-11-06 22:12:52,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19260dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:52, skipping insertion in model container [2023-11-06 22:12:52,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:12:52" (1/1) ... [2023-11-06 22:12:52,320 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:12:53,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:53,029 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:12:53,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:12:53,225 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:12:53,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53 WrapperNode [2023-11-06 22:12:53,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:12:53,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:53,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:12:53,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:12:53,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,333 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 393 [2023-11-06 22:12:53,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:12:53,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:12:53,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:12:53,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:12:53,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:12:53,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:12:53,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:12:53,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:12:53,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (1/1) ... [2023-11-06 22:12:53,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:12:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:12:53,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:12:53,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4ae0ca-a6b9-428b-9c51-7fe2901ad396/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:12:53,572 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:12:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:12:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:12:53,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:12:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:12:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:12:53,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:12:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:12:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:12:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:12:53,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:12:53,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:12:53,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:12:53,577 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 22:12:53,885 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:12:53,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:12:54,596 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:12:54,607 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:12:54,607 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:12:54,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:54 BoogieIcfgContainer [2023-11-06 22:12:54,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:12:54,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:12:54,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:12:54,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:12:54,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:12:52" (1/3) ... [2023-11-06 22:12:54,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3befffe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:54, skipping insertion in model container [2023-11-06 22:12:54,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:12:53" (2/3) ... [2023-11-06 22:12:54,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3befffe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:12:54, skipping insertion in model container [2023-11-06 22:12:54,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:12:54" (3/3) ... [2023-11-06 22:12:54,621 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-11-06 22:12:54,631 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:12:54,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:12:54,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2023-11-06 22:12:54,643 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:12:54,814 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:12:54,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 454 transitions, 922 flow [2023-11-06 22:12:55,187 INFO L124 PetriNetUnfolderBase]: 15/452 cut-off events. [2023-11-06 22:12:55,188 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:12:55,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 452 events. 15/452 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 806 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 321. Up to 3 conditions per place. [2023-11-06 22:12:55,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 454 transitions, 922 flow [2023-11-06 22:12:55,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 442 transitions, 893 flow [2023-11-06 22:12:55,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:12:55,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 442 transitions, 893 flow [2023-11-06 22:12:55,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 442 transitions, 893 flow [2023-11-06 22:12:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 442 transitions, 893 flow [2023-11-06 22:12:55,406 INFO L124 PetriNetUnfolderBase]: 15/442 cut-off events. [2023-11-06 22:12:55,406 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:12:55,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 442 events. 15/442 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 734 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 321. Up to 3 conditions per place. [2023-11-06 22:12:55,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 54888 [2023-11-06 22:13:25,034 WARN L293 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 126 DAG size of output: 120 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:13:55,239 WARN L293 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 220 DAG size of output: 209 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:14:38,390 WARN L293 SmtUtils]: Spent 42.59s on a formula simplification. DAG size of input: 230 DAG size of output: 218 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:14:39,250 INFO L134 LiptonReduction]: Checked pairs total: 387177 [2023-11-06 22:14:39,251 INFO L136 LiptonReduction]: Total number of compositions: 308 [2023-11-06 22:14:39,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:14:39,271 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;@3b1ff847, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:14:39,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-06 22:14:39,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:14:39,274 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:14:39,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:14:39,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:39,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:14:39,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-11-06 22:14:39,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:39,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1597, now seen corresponding path program 1 times [2023-11-06 22:14:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:39,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372077869] [2023-11-06 22:14:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:39,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,423 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 22:14:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:39,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372077869] [2023-11-06 22:14:39,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372077869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:39,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:39,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:14:39,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237720585] [2023-11-06 22:14:39,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:39,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:14:39,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:14:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:14:39,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 762 [2023-11-06 22:14:39,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 203 transitions, 415 flow. Second operand has 2 states, 2 states have (on average 441.5) internal successors, (883), 2 states have internal predecessors, (883), 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 22:14:39,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:39,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 762 [2023-11-06 22:14:39,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:40,792 INFO L124 PetriNetUnfolderBase]: 2187/7018 cut-off events. [2023-11-06 22:14:40,792 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:14:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10606 conditions, 7018 events. 2187/7018 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 59763 event pairs, 1829 based on Foata normal form. 46/6554 useless extension candidates. Maximal degree in co-relation 10166. Up to 3512 conditions per place. [2023-11-06 22:14:40,852 INFO L140 encePairwiseOnDemand]: 754/762 looper letters, 61 selfloop transitions, 0 changer transitions 0/195 dead transitions. [2023-11-06 22:14:40,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 195 transitions, 521 flow [2023-11-06 22:14:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:14:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:14:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 951 transitions. [2023-11-06 22:14:40,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6240157480314961 [2023-11-06 22:14:40,874 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 951 transitions. [2023-11-06 22:14:40,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 951 transitions. [2023-11-06 22:14:40,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:40,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 951 transitions. [2023-11-06 22:14:40,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 475.5) internal successors, (951), 2 states have internal predecessors, (951), 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 22:14:40,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 762.0) internal successors, (2286), 3 states have internal predecessors, (2286), 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 22:14:40,898 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 762.0) internal successors, (2286), 3 states have internal predecessors, (2286), 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 22:14:40,900 INFO L175 Difference]: Start difference. First operand has 202 places, 203 transitions, 415 flow. Second operand 2 states and 951 transitions. [2023-11-06 22:14:40,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 195 transitions, 521 flow [2023-11-06 22:14:40,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 195 transitions, 516 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:14:40,912 INFO L231 Difference]: Finished difference. Result has 193 places, 195 transitions, 394 flow [2023-11-06 22:14:40,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=762, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=193, PETRI_TRANSITIONS=195} [2023-11-06 22:14:40,918 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -9 predicate places. [2023-11-06 22:14:40,919 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 195 transitions, 394 flow [2023-11-06 22:14:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 441.5) internal successors, (883), 2 states have internal predecessors, (883), 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 22:14:40,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:40,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:14:40,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:14:40,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-11-06 22:14:40,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1532803201, now seen corresponding path program 1 times [2023-11-06 22:14:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629973112] [2023-11-06 22:14:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:40,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:41,109 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 22:14:41,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:41,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629973112] [2023-11-06 22:14:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629973112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:41,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:41,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765752204] [2023-11-06 22:14:41,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:41,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:41,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 762 [2023-11-06 22:14:41,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 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 22:14:41,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:41,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 762 [2023-11-06 22:14:41,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:42,787 INFO L124 PetriNetUnfolderBase]: 2703/8515 cut-off events. [2023-11-06 22:14:42,788 INFO L125 PetriNetUnfolderBase]: For 27/79 co-relation queries the response was YES. [2023-11-06 22:14:42,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12995 conditions, 8515 events. 2703/8515 cut-off events. For 27/79 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 74753 event pairs, 594 based on Foata normal form. 1/7901 useless extension candidates. Maximal degree in co-relation 12992. Up to 3151 conditions per place. [2023-11-06 22:14:42,862 INFO L140 encePairwiseOnDemand]: 757/762 looper letters, 118 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2023-11-06 22:14:42,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 252 transitions, 755 flow [2023-11-06 22:14:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1428 transitions. [2023-11-06 22:14:42,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6246719160104987 [2023-11-06 22:14:42,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1428 transitions. [2023-11-06 22:14:42,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1428 transitions. [2023-11-06 22:14:42,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:42,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1428 transitions. [2023-11-06 22:14:42,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.0) internal successors, (1428), 3 states have internal predecessors, (1428), 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 22:14:42,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 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 22:14:42,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 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 22:14:42,884 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 394 flow. Second operand 3 states and 1428 transitions. [2023-11-06 22:14:42,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 252 transitions, 755 flow [2023-11-06 22:14:42,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 252 transitions, 755 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:14:42,892 INFO L231 Difference]: Finished difference. Result has 197 places, 198 transitions, 424 flow [2023-11-06 22:14:42,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=762, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=197, PETRI_TRANSITIONS=198} [2023-11-06 22:14:42,893 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -5 predicate places. [2023-11-06 22:14:42,894 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 198 transitions, 424 flow [2023-11-06 22:14:42,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 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 22:14:42,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:42,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:42,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:14:42,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-11-06 22:14:42,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash -145994268, now seen corresponding path program 1 times [2023-11-06 22:14:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:42,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97265015] [2023-11-06 22:14:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,064 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 22:14:43,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97265015] [2023-11-06 22:14:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97265015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:43,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:43,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944373992] [2023-11-06 22:14:43,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:43,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:43,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 762 [2023-11-06 22:14:43,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 198 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 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 22:14:43,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:43,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 762 [2023-11-06 22:14:43,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:44,677 INFO L124 PetriNetUnfolderBase]: 2797/9006 cut-off events. [2023-11-06 22:14:44,678 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-11-06 22:14:44,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13911 conditions, 9006 events. 2797/9006 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 82482 event pairs, 750 based on Foata normal form. 0/8259 useless extension candidates. Maximal degree in co-relation 13906. Up to 3108 conditions per place. [2023-11-06 22:14:44,743 INFO L140 encePairwiseOnDemand]: 757/762 looper letters, 115 selfloop transitions, 4 changer transitions 0/252 dead transitions. [2023-11-06 22:14:44,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 252 transitions, 775 flow [2023-11-06 22:14:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1424 transitions. [2023-11-06 22:14:44,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6229221347331584 [2023-11-06 22:14:44,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1424 transitions. [2023-11-06 22:14:44,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1424 transitions. [2023-11-06 22:14:44,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:44,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1424 transitions. [2023-11-06 22:14:44,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 474.6666666666667) internal successors, (1424), 3 states have internal predecessors, (1424), 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 22:14:44,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 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 22:14:44,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 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 22:14:44,765 INFO L175 Difference]: Start difference. First operand has 197 places, 198 transitions, 424 flow. Second operand 3 states and 1424 transitions. [2023-11-06 22:14:44,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 252 transitions, 775 flow [2023-11-06 22:14:44,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 252 transitions, 765 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:44,773 INFO L231 Difference]: Finished difference. Result has 199 places, 201 transitions, 446 flow [2023-11-06 22:14:44,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=762, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=199, PETRI_TRANSITIONS=201} [2023-11-06 22:14:44,775 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -3 predicate places. [2023-11-06 22:14:44,775 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 201 transitions, 446 flow [2023-11-06 22:14:44,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 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 22:14:44,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:44,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:44,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:44,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-11-06 22:14:44,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2012639986, now seen corresponding path program 1 times [2023-11-06 22:14:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205950858] [2023-11-06 22:14:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:44,869 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 22:14:44,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:44,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205950858] [2023-11-06 22:14:44,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205950858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:44,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:44,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:44,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956104059] [2023-11-06 22:14:44,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:44,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:44,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:44,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:44,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:44,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 762 [2023-11-06 22:14:44,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 201 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 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 22:14:44,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:44,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 762 [2023-11-06 22:14:44,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:14:47,467 INFO L124 PetriNetUnfolderBase]: 4200/14744 cut-off events. [2023-11-06 22:14:47,467 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2023-11-06 22:14:47,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22172 conditions, 14744 events. 4200/14744 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 142925 event pairs, 2304 based on Foata normal form. 0/13815 useless extension candidates. Maximal degree in co-relation 22166. Up to 4378 conditions per place. [2023-11-06 22:14:47,575 INFO L140 encePairwiseOnDemand]: 759/762 looper letters, 111 selfloop transitions, 2 changer transitions 0/250 dead transitions. [2023-11-06 22:14:47,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 250 transitions, 776 flow [2023-11-06 22:14:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:14:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1422 transitions. [2023-11-06 22:14:47,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6220472440944882 [2023-11-06 22:14:47,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1422 transitions. [2023-11-06 22:14:47,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1422 transitions. [2023-11-06 22:14:47,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:14:47,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1422 transitions. [2023-11-06 22:14:47,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 474.0) internal successors, (1422), 3 states have internal predecessors, (1422), 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 22:14:47,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 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 22:14:47,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 762.0) internal successors, (3048), 4 states have internal predecessors, (3048), 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 22:14:47,596 INFO L175 Difference]: Start difference. First operand has 199 places, 201 transitions, 446 flow. Second operand 3 states and 1422 transitions. [2023-11-06 22:14:47,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 250 transitions, 776 flow [2023-11-06 22:14:47,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 250 transitions, 766 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:14:47,604 INFO L231 Difference]: Finished difference. Result has 200 places, 202 transitions, 450 flow [2023-11-06 22:14:47,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=762, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=200, PETRI_TRANSITIONS=202} [2023-11-06 22:14:47,606 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, -2 predicate places. [2023-11-06 22:14:47,606 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 202 transitions, 450 flow [2023-11-06 22:14:47,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 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 22:14:47,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:14:47,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:47,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:14:47,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-11-06 22:14:47,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 534070104, now seen corresponding path program 1 times [2023-11-06 22:14:47,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:47,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781861671] [2023-11-06 22:14:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:48,065 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 22:14:48,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:48,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781861671] [2023-11-06 22:14:48,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781861671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:48,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:48,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:14:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099794371] [2023-11-06 22:14:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:48,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:14:48,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:14:48,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:14:49,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 762 [2023-11-06 22:14:49,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 202 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 388.6666666666667) internal successors, (2332), 6 states have internal predecessors, (2332), 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 22:14:49,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:14:49,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 762 [2023-11-06 22:14:49,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:15:08,579 INFO L124 PetriNetUnfolderBase]: 76142/140420 cut-off events. [2023-11-06 22:15:08,579 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2023-11-06 22:15:09,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262160 conditions, 140420 events. 76142/140420 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 1767. Compared 1359913 event pairs, 28105 based on Foata normal form. 0/131302 useless extension candidates. Maximal degree in co-relation 262153. Up to 79150 conditions per place. [2023-11-06 22:15:09,683 INFO L140 encePairwiseOnDemand]: 724/762 looper letters, 311 selfloop transitions, 133 changer transitions 0/548 dead transitions. [2023-11-06 22:15:09,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 548 transitions, 2119 flow [2023-11-06 22:15:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:15:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:15:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2747 transitions. [2023-11-06 22:15:09,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008311461067367 [2023-11-06 22:15:09,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2747 transitions. [2023-11-06 22:15:09,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2747 transitions. [2023-11-06 22:15:09,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:15:09,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2747 transitions. [2023-11-06 22:15:09,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 457.8333333333333) internal successors, (2747), 6 states have internal predecessors, (2747), 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 22:15:09,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 762.0) internal successors, (5334), 7 states have internal predecessors, (5334), 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 22:15:09,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 762.0) internal successors, (5334), 7 states have internal predecessors, (5334), 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 22:15:09,723 INFO L175 Difference]: Start difference. First operand has 200 places, 202 transitions, 450 flow. Second operand 6 states and 2747 transitions. [2023-11-06 22:15:09,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 548 transitions, 2119 flow [2023-11-06 22:15:09,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 548 transitions, 2109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:15:09,751 INFO L231 Difference]: Finished difference. Result has 209 places, 334 transitions, 1318 flow [2023-11-06 22:15:09,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=762, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1318, PETRI_PLACES=209, PETRI_TRANSITIONS=334} [2023-11-06 22:15:09,754 INFO L281 CegarLoopForPetriNet]: 202 programPoint places, 7 predicate places. [2023-11-06 22:15:09,754 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 334 transitions, 1318 flow [2023-11-06 22:15:09,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 388.6666666666667) internal successors, (2332), 6 states have internal predecessors, (2332), 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 22:15:09,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:15:09,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:09,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:15:09,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-11-06 22:15:09,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:09,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1114355422, now seen corresponding path program 1 times [2023-11-06 22:15:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:09,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265415218] [2023-11-06 22:15:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:09,826 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 22:15:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:09,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265415218] [2023-11-06 22:15:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265415218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:15:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588423359] [2023-11-06 22:15:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:15:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:15:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:15:09,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 762 [2023-11-06 22:15:09,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 334 transitions, 1318 flow. Second operand has 3 states, 3 states have (on average 439.6666666666667) internal successors, (1319), 3 states have internal predecessors, (1319), 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 22:15:09,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:15:09,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 762 [2023-11-06 22:15:09,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand