./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da100b5cb95d7325be7357bb16aa7526e66fa3d3a90ac0a0850ac9736c0f81ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:23,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:23,294 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 10:48:23,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:23,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:23,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:23,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:23,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:23,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:23,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:23,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:23,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:23,355 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:23,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:23,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:23,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:23,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:23,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:23,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:23,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:23,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:23,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:23,362 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 10:48:23,363 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:23,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:23,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:23,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:23,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:23,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:23,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:23,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:23,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:23,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:23,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:23,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:23,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:23,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:23,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:23,371 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:23,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:23,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:23,372 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_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da100b5cb95d7325be7357bb16aa7526e66fa3d3a90ac0a0850ac9736c0f81ee [2023-11-26 10:48:23,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:23,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:23,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:23,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:23,810 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:23,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i [2023-11-26 10:48:27,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:27,549 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:27,549 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/sv-benchmarks/c/pthread-race-challenges/per-thread-struct-tid.i [2023-11-26 10:48:27,571 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/data/4c4c9b546/106bbc3479284f04b121f3481284d2b3/FLAGbc2cf288f [2023-11-26 10:48:27,588 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/data/4c4c9b546/106bbc3479284f04b121f3481284d2b3 [2023-11-26 10:48:27,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:27,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:27,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:27,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:27,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:27,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:27" (1/1) ... [2023-11-26 10:48:27,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f90689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:27, skipping insertion in model container [2023-11-26 10:48:27,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:27" (1/1) ... [2023-11-26 10:48:27,663 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:28,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:28,322 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:28,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:28,485 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:28,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28 WrapperNode [2023-11-26 10:48:28,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:28,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:28,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:28,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:28,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,558 INFO L138 Inliner]: procedures = 263, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2023-11-26 10:48:28,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:28,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:28,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:28,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:28,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:28,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:28,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:28,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:28,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (1/1) ... [2023-11-26 10:48:28,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:28,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:28,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:28,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 10:48:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:48:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:48:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:48:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 10:48:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-26 10:48:28,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-26 10:48:28,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:28,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:28,703 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:48:28,856 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:28,858 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:29,186 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:29,211 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:29,211 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:48:29,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:29 BoogieIcfgContainer [2023-11-26 10:48:29,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:29,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:29,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:29,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:29,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:27" (1/3) ... [2023-11-26 10:48:29,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2798873b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:29, skipping insertion in model container [2023-11-26 10:48:29,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:28" (2/3) ... [2023-11-26 10:48:29,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2798873b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:29, skipping insertion in model container [2023-11-26 10:48:29,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:29" (3/3) ... [2023-11-26 10:48:29,229 INFO L112 eAbstractionObserver]: Analyzing ICFG per-thread-struct-tid.i [2023-11-26 10:48:29,238 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:48:29,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:29,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-26 10:48:29,248 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:48:29,322 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-26 10:48:29,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 101 transitions, 209 flow [2023-11-26 10:48:29,450 INFO L124 PetriNetUnfolderBase]: 6/144 cut-off events. [2023-11-26 10:48:29,451 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 10:48:29,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 144 events. 6/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 228 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-11-26 10:48:29,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 101 transitions, 209 flow [2023-11-26 10:48:29,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 209 flow [2023-11-26 10:48:29,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:29,483 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ab17ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:29,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-26 10:48:29,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:29,498 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-26 10:48:29,499 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:29,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:29,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:29,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 10:48:29,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:29,507 INFO L85 PathProgramCache]: Analyzing trace with hash 110762765, now seen corresponding path program 1 times [2023-11-26 10:48:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836699945] [2023-11-26 10:48:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836699945] [2023-11-26 10:48:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836699945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:30,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:30,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904769055] [2023-11-26 10:48:30,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:30,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:30,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:30,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 101 [2023-11-26 10:48:30,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 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) [2023-11-26 10:48:30,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:30,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 101 [2023-11-26 10:48:30,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:30,463 INFO L124 PetriNetUnfolderBase]: 1/145 cut-off events. [2023-11-26 10:48:30,464 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 10:48:30,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 145 events. 1/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 176 event pairs, 0 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 39. Up to 16 conditions per place. [2023-11-26 10:48:30,468 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 11 selfloop transitions, 2 changer transitions 6/103 dead transitions. [2023-11-26 10:48:30,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 103 transitions, 249 flow [2023-11-26 10:48:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2023-11-26 10:48:30,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8811881188118812 [2023-11-26 10:48:30,498 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 534 transitions. [2023-11-26 10:48:30,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 534 transitions. [2023-11-26 10:48:30,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:30,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 534 transitions. [2023-11-26 10:48:30,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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) [2023-11-26 10:48:30,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:30,522 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:30,524 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 209 flow. Second operand 6 states and 534 transitions. [2023-11-26 10:48:30,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 103 transitions, 249 flow [2023-11-26 10:48:30,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 103 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:30,534 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 219 flow [2023-11-26 10:48:30,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2023-11-26 10:48:30,542 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 9 predicate places. [2023-11-26 10:48:30,543 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 219 flow [2023-11-26 10:48:30,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 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) [2023-11-26 10:48:30,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:30,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:30,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:30,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 10:48:30,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:30,548 INFO L85 PathProgramCache]: Analyzing trace with hash -320054848, now seen corresponding path program 1 times [2023-11-26 10:48:30,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:30,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105123420] [2023-11-26 10:48:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:31,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:31,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105123420] [2023-11-26 10:48:31,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105123420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:31,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:31,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:31,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238561985] [2023-11-26 10:48:31,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:31,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:31,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:31,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:31,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:31,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 101 [2023-11-26 10:48:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 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) [2023-11-26 10:48:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 101 [2023-11-26 10:48:31,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:31,706 INFO L124 PetriNetUnfolderBase]: 90/425 cut-off events. [2023-11-26 10:48:31,706 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 10:48:31,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 425 events. 90/425 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2038 event pairs, 52 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 588. Up to 200 conditions per place. [2023-11-26 10:48:31,712 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 31 selfloop transitions, 22 changer transitions 0/118 dead transitions. [2023-11-26 10:48:31,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 367 flow [2023-11-26 10:48:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2023-11-26 10:48:31,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7425742574257426 [2023-11-26 10:48:31,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2023-11-26 10:48:31,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2023-11-26 10:48:31,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:31,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2023-11-26 10:48:31,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2023-11-26 10:48:31,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:31,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:31,723 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 219 flow. Second operand 6 states and 450 transitions. [2023-11-26 10:48:31,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 367 flow [2023-11-26 10:48:31,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 118 transitions, 353 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-26 10:48:31,730 INFO L231 Difference]: Finished difference. Result has 110 places, 118 transitions, 355 flow [2023-11-26 10:48:31,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=110, PETRI_TRANSITIONS=118} [2023-11-26 10:48:31,732 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2023-11-26 10:48:31,732 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 118 transitions, 355 flow [2023-11-26 10:48:31,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 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) [2023-11-26 10:48:31,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:31,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:31,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:48:31,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 10:48:31,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:31,736 INFO L85 PathProgramCache]: Analyzing trace with hash 123090180, now seen corresponding path program 1 times [2023-11-26 10:48:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:31,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681902711] [2023-11-26 10:48:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:32,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681902711] [2023-11-26 10:48:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681902711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:32,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:32,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206868800] [2023-11-26 10:48:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:32,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:32,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:32,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 101 [2023-11-26 10:48:32,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 118 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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) [2023-11-26 10:48:32,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:32,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 101 [2023-11-26 10:48:32,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:32,810 INFO L124 PetriNetUnfolderBase]: 197/671 cut-off events. [2023-11-26 10:48:32,811 INFO L125 PetriNetUnfolderBase]: For 159/189 co-relation queries the response was YES. [2023-11-26 10:48:32,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 671 events. 197/671 cut-off events. For 159/189 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3678 event pairs, 36 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 1329. Up to 341 conditions per place. [2023-11-26 10:48:32,820 INFO L140 encePairwiseOnDemand]: 82/101 looper letters, 41 selfloop transitions, 64 changer transitions 7/177 dead transitions. [2023-11-26 10:48:32,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 177 transitions, 753 flow [2023-11-26 10:48:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:32,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2023-11-26 10:48:32,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8366336633663366 [2023-11-26 10:48:32,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2023-11-26 10:48:32,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2023-11-26 10:48:32,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:32,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2023-11-26 10:48:32,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 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) [2023-11-26 10:48:32,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:32,832 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:32,832 INFO L175 Difference]: Start difference. First operand has 110 places, 118 transitions, 355 flow. Second operand 6 states and 507 transitions. [2023-11-26 10:48:32,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 177 transitions, 753 flow [2023-11-26 10:48:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 753 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:32,843 INFO L231 Difference]: Finished difference. Result has 120 places, 170 transitions, 833 flow [2023-11-26 10:48:32,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=120, PETRI_TRANSITIONS=170} [2023-11-26 10:48:32,844 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 20 predicate places. [2023-11-26 10:48:32,845 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 170 transitions, 833 flow [2023-11-26 10:48:32,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 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) [2023-11-26 10:48:32,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:32,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:32,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:48:32,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 10:48:32,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash -884650249, now seen corresponding path program 1 times [2023-11-26 10:48:32,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075662710] [2023-11-26 10:48:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:33,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075662710] [2023-11-26 10:48:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075662710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:33,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:33,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:33,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031575320] [2023-11-26 10:48:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:33,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:33,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:33,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2023-11-26 10:48:33,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 170 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-11-26 10:48:33,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:33,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2023-11-26 10:48:33,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:33,788 INFO L124 PetriNetUnfolderBase]: 208/743 cut-off events. [2023-11-26 10:48:33,788 INFO L125 PetriNetUnfolderBase]: For 608/671 co-relation queries the response was YES. [2023-11-26 10:48:33,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 743 events. 208/743 cut-off events. For 608/671 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4463 event pairs, 15 based on Foata normal form. 0/721 useless extension candidates. Maximal degree in co-relation 1971. Up to 271 conditions per place. [2023-11-26 10:48:33,798 INFO L140 encePairwiseOnDemand]: 85/101 looper letters, 80 selfloop transitions, 36 changer transitions 0/200 dead transitions. [2023-11-26 10:48:33,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 1236 flow [2023-11-26 10:48:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:33,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-11-26 10:48:33,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7788778877887789 [2023-11-26 10:48:33,802 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-11-26 10:48:33,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-11-26 10:48:33,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:33,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-11-26 10:48:33,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2023-11-26 10:48:33,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:33,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 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) [2023-11-26 10:48:33,809 INFO L175 Difference]: Start difference. First operand has 120 places, 170 transitions, 833 flow. Second operand 6 states and 472 transitions. [2023-11-26 10:48:33,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 1236 flow [2023-11-26 10:48:33,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 200 transitions, 1218 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:33,828 INFO L231 Difference]: Finished difference. Result has 122 places, 199 transitions, 1163 flow [2023-11-26 10:48:33,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1163, PETRI_PLACES=122, PETRI_TRANSITIONS=199} [2023-11-26 10:48:33,830 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 22 predicate places. [2023-11-26 10:48:33,830 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 199 transitions, 1163 flow [2023-11-26 10:48:33,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2023-11-26 10:48:33,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:33,831 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:48:33,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-26 10:48:33,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 122711626, now seen corresponding path program 1 times [2023-11-26 10:48:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:33,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225479659] [2023-11-26 10:48:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:33,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:48:33,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:48:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:48:33,923 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:48:33,923 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:48:33,924 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-26 10:48:33,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-26 10:48:33,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-26 10:48:33,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-26 10:48:33,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-26 10:48:33,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-26 10:48:33,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-26 10:48:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:48:33,929 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-26 10:48:33,932 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 10:48:33,932 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 10:48:33,962 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:48:33,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 119 transitions, 254 flow [2023-11-26 10:48:34,008 INFO L124 PetriNetUnfolderBase]: 11/263 cut-off events. [2023-11-26 10:48:34,008 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 10:48:34,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 263 events. 11/263 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 507 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2023-11-26 10:48:34,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 119 transitions, 254 flow [2023-11-26 10:48:34,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 119 transitions, 254 flow [2023-11-26 10:48:34,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:34,015 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5ab17ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:34,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 10:48:34,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:34,021 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2023-11-26 10:48:34,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:34,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:34,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2007563443, now seen corresponding path program 1 times [2023-11-26 10:48:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:34,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343611622] [2023-11-26 10:48:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343611622] [2023-11-26 10:48:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343611622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:34,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:34,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271328439] [2023-11-26 10:48:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:34,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 119 [2023-11-26 10:48:34,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 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) [2023-11-26 10:48:34,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:34,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 119 [2023-11-26 10:48:34,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:34,355 INFO L124 PetriNetUnfolderBase]: 3/261 cut-off events. [2023-11-26 10:48:34,355 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-26 10:48:34,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 261 events. 3/261 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 525 event pairs, 0 based on Foata normal form. 2/246 useless extension candidates. Maximal degree in co-relation 168. Up to 32 conditions per place. [2023-11-26 10:48:34,358 INFO L140 encePairwiseOnDemand]: 108/119 looper letters, 14 selfloop transitions, 2 changer transitions 6/122 dead transitions. [2023-11-26 10:48:34,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 302 flow [2023-11-26 10:48:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:34,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 633 transitions. [2023-11-26 10:48:34,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8865546218487395 [2023-11-26 10:48:34,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 633 transitions. [2023-11-26 10:48:34,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 633 transitions. [2023-11-26 10:48:34,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:34,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 633 transitions. [2023-11-26 10:48:34,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 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) [2023-11-26 10:48:34,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:34,369 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:34,369 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 254 flow. Second operand 6 states and 633 transitions. [2023-11-26 10:48:34,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 302 flow [2023-11-26 10:48:34,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 122 transitions, 302 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:34,374 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 268 flow [2023-11-26 10:48:34,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2023-11-26 10:48:34,379 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 9 predicate places. [2023-11-26 10:48:34,379 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 268 flow [2023-11-26 10:48:34,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 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) [2023-11-26 10:48:34,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:34,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:34,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:48:34,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:34,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1563657737, now seen corresponding path program 1 times [2023-11-26 10:48:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875746270] [2023-11-26 10:48:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:34,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:34,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:34,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875746270] [2023-11-26 10:48:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875746270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:34,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:34,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964219628] [2023-11-26 10:48:34,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:34,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:34,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 119 [2023-11-26 10:48:34,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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) [2023-11-26 10:48:34,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:34,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 119 [2023-11-26 10:48:34,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:35,711 INFO L124 PetriNetUnfolderBase]: 1143/3263 cut-off events. [2023-11-26 10:48:35,711 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-26 10:48:35,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5458 conditions, 3263 events. 1143/3263 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 24888 event pairs, 764 based on Foata normal form. 0/2970 useless extension candidates. Maximal degree in co-relation 4312. Up to 1816 conditions per place. [2023-11-26 10:48:35,744 INFO L140 encePairwiseOnDemand]: 104/119 looper letters, 38 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2023-11-26 10:48:35,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 153 transitions, 494 flow [2023-11-26 10:48:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-11-26 10:48:35,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2023-11-26 10:48:35,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-11-26 10:48:35,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-11-26 10:48:35,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:35,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-11-26 10:48:35,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 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) [2023-11-26 10:48:35,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:35,754 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:35,755 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 268 flow. Second operand 6 states and 544 transitions. [2023-11-26 10:48:35,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 153 transitions, 494 flow [2023-11-26 10:48:35,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 153 transitions, 482 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 10:48:35,761 INFO L231 Difference]: Finished difference. Result has 130 places, 153 transitions, 510 flow [2023-11-26 10:48:35,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=510, PETRI_PLACES=130, PETRI_TRANSITIONS=153} [2023-11-26 10:48:35,763 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 11 predicate places. [2023-11-26 10:48:35,763 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 153 transitions, 510 flow [2023-11-26 10:48:35,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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) [2023-11-26 10:48:35,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:35,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:35,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:48:35,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:35,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2075767851, now seen corresponding path program 1 times [2023-11-26 10:48:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360522061] [2023-11-26 10:48:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:36,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:36,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360522061] [2023-11-26 10:48:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360522061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:36,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:36,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:36,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442041377] [2023-11-26 10:48:36,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:36,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:36,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:36,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 119 [2023-11-26 10:48:36,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 153 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 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) [2023-11-26 10:48:36,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:36,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 119 [2023-11-26 10:48:36,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:37,760 INFO L124 PetriNetUnfolderBase]: 2605/6208 cut-off events. [2023-11-26 10:48:37,761 INFO L125 PetriNetUnfolderBase]: For 1573/1736 co-relation queries the response was YES. [2023-11-26 10:48:37,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14073 conditions, 6208 events. 2605/6208 cut-off events. For 1573/1736 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 48776 event pairs, 747 based on Foata normal form. 0/5792 useless extension candidates. Maximal degree in co-relation 11520. Up to 3531 conditions per place. [2023-11-26 10:48:37,835 INFO L140 encePairwiseOnDemand]: 92/119 looper letters, 71 selfloop transitions, 124 changer transitions 0/280 dead transitions. [2023-11-26 10:48:37,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 280 transitions, 1400 flow [2023-11-26 10:48:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2023-11-26 10:48:37,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8753501400560224 [2023-11-26 10:48:37,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 625 transitions. [2023-11-26 10:48:37,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 625 transitions. [2023-11-26 10:48:37,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:37,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 625 transitions. [2023-11-26 10:48:37,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 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) [2023-11-26 10:48:37,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:37,846 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:37,846 INFO L175 Difference]: Start difference. First operand has 130 places, 153 transitions, 510 flow. Second operand 6 states and 625 transitions. [2023-11-26 10:48:37,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 280 transitions, 1400 flow [2023-11-26 10:48:37,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 280 transitions, 1400 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:37,864 INFO L231 Difference]: Finished difference. Result has 140 places, 272 transitions, 1554 flow [2023-11-26 10:48:37,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1554, PETRI_PLACES=140, PETRI_TRANSITIONS=272} [2023-11-26 10:48:37,865 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 21 predicate places. [2023-11-26 10:48:37,865 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 272 transitions, 1554 flow [2023-11-26 10:48:37,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 6 states have internal predecessors, (510), 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) [2023-11-26 10:48:37,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:37,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:37,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:48:37,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:37,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1445906526, now seen corresponding path program 1 times [2023-11-26 10:48:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:37,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021909162] [2023-11-26 10:48:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021909162] [2023-11-26 10:48:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021909162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:38,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:38,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682433372] [2023-11-26 10:48:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:38,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:38,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 119 [2023-11-26 10:48:38,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 272 transitions, 1554 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2023-11-26 10:48:38,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:38,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 119 [2023-11-26 10:48:38,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:40,436 INFO L124 PetriNetUnfolderBase]: 3224/7675 cut-off events. [2023-11-26 10:48:40,437 INFO L125 PetriNetUnfolderBase]: For 6711/7174 co-relation queries the response was YES. [2023-11-26 10:48:40,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23266 conditions, 7675 events. 3224/7675 cut-off events. For 6711/7174 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 62553 event pairs, 459 based on Foata normal form. 0/7327 useless extension candidates. Maximal degree in co-relation 19055. Up to 3823 conditions per place. [2023-11-26 10:48:40,548 INFO L140 encePairwiseOnDemand]: 98/119 looper letters, 170 selfloop transitions, 88 changer transitions 0/360 dead transitions. [2023-11-26 10:48:40,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 360 transitions, 2634 flow [2023-11-26 10:48:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2023-11-26 10:48:40,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8053221288515406 [2023-11-26 10:48:40,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2023-11-26 10:48:40,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2023-11-26 10:48:40,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:40,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2023-11-26 10:48:40,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2023-11-26 10:48:40,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:40,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:40,562 INFO L175 Difference]: Start difference. First operand has 140 places, 272 transitions, 1554 flow. Second operand 6 states and 575 transitions. [2023-11-26 10:48:40,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 360 transitions, 2634 flow [2023-11-26 10:48:40,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 360 transitions, 2616 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:40,644 INFO L231 Difference]: Finished difference. Result has 150 places, 352 transitions, 2504 flow [2023-11-26 10:48:40,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2504, PETRI_PLACES=150, PETRI_TRANSITIONS=352} [2023-11-26 10:48:40,647 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 31 predicate places. [2023-11-26 10:48:40,647 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 352 transitions, 2504 flow [2023-11-26 10:48:40,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2023-11-26 10:48:40,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:40,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:40,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:48:40,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:40,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:40,649 INFO L85 PathProgramCache]: Analyzing trace with hash -272965224, now seen corresponding path program 1 times [2023-11-26 10:48:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746797149] [2023-11-26 10:48:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:40,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746797149] [2023-11-26 10:48:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746797149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:41,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:41,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:41,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444433439] [2023-11-26 10:48:41,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:41,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:41,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:41,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:48:41,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2023-11-26 10:48:41,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 352 transitions, 2504 flow. Second operand has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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) [2023-11-26 10:48:41,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:41,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2023-11-26 10:48:41,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:43,424 INFO L124 PetriNetUnfolderBase]: 3689/8462 cut-off events. [2023-11-26 10:48:43,425 INFO L125 PetriNetUnfolderBase]: For 15104/15566 co-relation queries the response was YES. [2023-11-26 10:48:43,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30661 conditions, 8462 events. 3689/8462 cut-off events. For 15104/15566 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 67996 event pairs, 333 based on Foata normal form. 0/8152 useless extension candidates. Maximal degree in co-relation 25539. Up to 4191 conditions per place. [2023-11-26 10:48:43,530 INFO L140 encePairwiseOnDemand]: 104/119 looper letters, 206 selfloop transitions, 124 changer transitions 0/473 dead transitions. [2023-11-26 10:48:43,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 473 transitions, 4302 flow [2023-11-26 10:48:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2023-11-26 10:48:43,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8487394957983193 [2023-11-26 10:48:43,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2023-11-26 10:48:43,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2023-11-26 10:48:43,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:43,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2023-11-26 10:48:43,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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) [2023-11-26 10:48:43,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:43,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-26 10:48:43,540 INFO L175 Difference]: Start difference. First operand has 150 places, 352 transitions, 2504 flow. Second operand 6 states and 606 transitions. [2023-11-26 10:48:43,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 473 transitions, 4302 flow [2023-11-26 10:48:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 473 transitions, 4062 flow, removed 120 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:43,629 INFO L231 Difference]: Finished difference. Result has 160 places, 471 transitions, 3984 flow [2023-11-26 10:48:43,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3984, PETRI_PLACES=160, PETRI_TRANSITIONS=471} [2023-11-26 10:48:43,631 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 41 predicate places. [2023-11-26 10:48:43,631 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 471 transitions, 3984 flow [2023-11-26 10:48:43,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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) [2023-11-26 10:48:43,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:43,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:43,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:48:43,633 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:43,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:43,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1899929088, now seen corresponding path program 1 times [2023-11-26 10:48:43,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:43,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777772900] [2023-11-26 10:48:43,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777772900] [2023-11-26 10:48:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777772900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581564219] [2023-11-26 10:48:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:44,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:44,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:44,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-26 10:48:44,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:44,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-26 10:48:44,667 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-26 10:48:44,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 11 [2023-11-26 10:48:44,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-26 10:48:44,773 INFO L378 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 23 treesize of output 22 [2023-11-26 10:48:44,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 10:48:44,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-26 10:48:44,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 10:48:44,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-11-26 10:48:44,861 INFO L378 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 45 treesize of output 34 [2023-11-26 10:48:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:44,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:44,912 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 4)))) (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 6)))) (forall ((v_ArrVal_370 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ 7 c_threadThread1of2ForFork0_~t~0.offset)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_370 (Array Int Int))) (= (select (select (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 5)) |c_threadThread1of2ForFork0_#t~nondet4|))) is different from false [2023-11-26 10:48:44,940 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 7 c_threadThread1of2ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 4)))) (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) .cse1))) (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 5)))) (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 6))))))) is different from false [2023-11-26 10:48:44,974 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_threadThread1of2ForFork0_~t~0.offset 6)) (.cse1 (+ 7 c_threadThread1of2ForFork0_~t~0.offset))) (let ((.cse0 (store |c_#race| c_threadThread1of2ForFork0_~t~0.base (store (store (select |c_#race| c_threadThread1of2ForFork0_~t~0.base) .cse2 |c_threadThread1of2ForFork0_#t~nondet4|) .cse1 |c_threadThread1of2ForFork0_#t~nondet4|)))) (and (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 4)))) (forall ((v_ArrVal_370 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) .cse1) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_370 (Array Int Int))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) (+ c_threadThread1of2ForFork0_~t~0.offset 5)) |c_threadThread1of2ForFork0_#t~nondet4|)) (forall ((v_ArrVal_370 (Array Int Int))) (= |c_threadThread1of2ForFork0_#t~nondet4| (select (select (store .cse0 |c_ULTIMATE.start_main_~ts~0#1.base| v_ArrVal_370) c_threadThread1of2ForFork0_~t~0.base) .cse2)))))) is different from false [2023-11-26 10:48:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:45,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581564219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:45,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:45,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2023-11-26 10:48:45,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944429615] [2023-11-26 10:48:45,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:45,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 10:48:45,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:45,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 10:48:45,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=201, Unknown=3, NotChecked=90, Total=342 [2023-11-26 10:48:45,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 119 [2023-11-26 10:48:45,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 471 transitions, 3984 flow. Second operand has 19 states, 19 states have (on average 56.89473684210526) internal successors, (1081), 19 states have internal predecessors, (1081), 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) [2023-11-26 10:48:45,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:45,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 119 [2023-11-26 10:48:45,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:53,696 INFO L124 PetriNetUnfolderBase]: 11510/22830 cut-off events. [2023-11-26 10:48:53,696 INFO L125 PetriNetUnfolderBase]: For 46570/46600 co-relation queries the response was YES. [2023-11-26 10:48:53,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85352 conditions, 22830 events. 11510/22830 cut-off events. For 46570/46600 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 193367 event pairs, 621 based on Foata normal form. 222/21955 useless extension candidates. Maximal degree in co-relation 76822. Up to 7166 conditions per place. [2023-11-26 10:48:53,992 INFO L140 encePairwiseOnDemand]: 91/119 looper letters, 946 selfloop transitions, 553 changer transitions 43/1600 dead transitions. [2023-11-26 10:48:53,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 1600 transitions, 15564 flow [2023-11-26 10:48:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-26 10:48:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-26 10:48:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2674 transitions. [2023-11-26 10:48:54,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073131955484896 [2023-11-26 10:48:54,003 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2674 transitions. [2023-11-26 10:48:54,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2674 transitions. [2023-11-26 10:48:54,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:54,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2674 transitions. [2023-11-26 10:48:54,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 72.27027027027027) internal successors, (2674), 37 states have internal predecessors, (2674), 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) [2023-11-26 10:48:54,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 119.0) internal successors, (4522), 38 states have internal predecessors, (4522), 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) [2023-11-26 10:48:54,029 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 119.0) internal successors, (4522), 38 states have internal predecessors, (4522), 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) [2023-11-26 10:48:54,029 INFO L175 Difference]: Start difference. First operand has 160 places, 471 transitions, 3984 flow. Second operand 37 states and 2674 transitions. [2023-11-26 10:48:54,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 1600 transitions, 15564 flow [2023-11-26 10:48:54,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1600 transitions, 15264 flow, removed 150 selfloop flow, removed 0 redundant places. [2023-11-26 10:48:54,555 INFO L231 Difference]: Finished difference. Result has 219 places, 918 transitions, 10189 flow [2023-11-26 10:48:54,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=10189, PETRI_PLACES=219, PETRI_TRANSITIONS=918} [2023-11-26 10:48:54,557 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 100 predicate places. [2023-11-26 10:48:54,557 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 918 transitions, 10189 flow [2023-11-26 10:48:54,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 56.89473684210526) internal successors, (1081), 19 states have internal predecessors, (1081), 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) [2023-11-26 10:48:54,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:54,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:54,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:54,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:54,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-26 10:48:54,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:54,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1676153764, now seen corresponding path program 1 times [2023-11-26 10:48:54,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815375271] [2023-11-26 10:48:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:54,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815375271] [2023-11-26 10:48:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815375271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836976991] [2023-11-26 10:48:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:55,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:55,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:55,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2b97b5-9406-4081-97e8-17cac3b2a677/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:55,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-26 10:48:55,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:55,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-26 10:48:55,907 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-26 10:48:55,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 11 [2023-11-26 10:48:56,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-11-26 10:48:56,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2023-11-26 10:48:56,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-26 10:48:56,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-26 10:48:56,491 INFO L378 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 37 treesize of output 26 [2023-11-26 10:48:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:56,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:56,578 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (and (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 3 .cse0)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| .cse0)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 2 .cse0)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store |c_#race| c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 1 .cse0)) 0)))) is different from false [2023-11-26 10:48:56,601 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 3 .cse2))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_458 (Array Int Int))) (= 0 (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) .cse1))) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 2 .cse2)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| .cse2)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 1 .cse2)) 0)))))) is different from false [2023-11-26 10:48:56,623 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~1#1| 4))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 2 .cse1)) (.cse3 (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 3 .cse1))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base| (store (store (select |c_#race| |c_ULTIMATE.start_main_~ts~0#1.base|) .cse2 0) .cse3 0)))) (and (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| 1 .cse1)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) (+ |c_ULTIMATE.start_main_~ts~0#1.offset| .cse1)) 0)) (forall ((v_ArrVal_458 (Array Int Int))) (= (select (select (store .cse0 c_threadThread1of2ForFork0_~t~0.base v_ArrVal_458) |c_ULTIMATE.start_main_~ts~0#1.base|) .cse3) 0)))))) is different from false [2023-11-26 10:48:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836976991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:56,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 15] total 37 [2023-11-26 10:48:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926322223] [2023-11-26 10:48:56,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-26 10:48:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:56,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-26 10:48:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1057, Unknown=3, NotChecked=204, Total=1406 [2023-11-26 10:48:57,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 119 [2023-11-26 10:48:57,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 918 transitions, 10189 flow. Second operand has 38 states, 38 states have (on average 40.31578947368421) internal successors, (1532), 38 states have internal predecessors, (1532), 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) [2023-11-26 10:48:57,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:57,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 119 [2023-11-26 10:48:57,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand