./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:29:43,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:29:43,446 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:29:43,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:29:43,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:29:43,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:29:43,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:29:43,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:29:43,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:29:43,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:29:43,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:29:43,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:29:43,489 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:29:43,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:29:43,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:29:43,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:29:43,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:29:43,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:29:43,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:29:43,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:29:43,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:29:43,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:29:43,495 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:29:43,495 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:29:43,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:29:43,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:29:43,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:29:43,497 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:29:43,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:29:43,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:29:43,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:43,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:29:43,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:29:43,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:29:43,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:29:43,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:29:43,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:29:43,502 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:29:43,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:29:43,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:29:43,503 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:29:43,504 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_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f874a9872f93f025fac23ebed37f94a1f3b80bd0133ea4d7e298577c4fec427 [2023-11-06 22:29:43,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:29:43,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:29:43,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:29:43,860 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:29:43,864 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:29:43,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/queue_longer.i [2023-11-06 22:29:47,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:29:47,472 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:29:47,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/sv-benchmarks/c/pthread/queue_longer.i [2023-11-06 22:29:47,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/data/fa5d5e046/0880ce0e228a4011b7352a6bdad7ca35/FLAGb03d98ea4 [2023-11-06 22:29:47,509 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/data/fa5d5e046/0880ce0e228a4011b7352a6bdad7ca35 [2023-11-06 22:29:47,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:29:47,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:29:47,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:47,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:29:47,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:29:47,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:47" (1/1) ... [2023-11-06 22:29:47,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edcd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:47, skipping insertion in model container [2023-11-06 22:29:47,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:29:47" (1/1) ... [2023-11-06 22:29:47,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:29:48,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:48,228 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:29:48,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:29:48,434 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:29:48,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48 WrapperNode [2023-11-06 22:29:48,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:29:48,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:48,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:29:48,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:29:48,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,587 INFO L138 Inliner]: procedures = 274, calls = 63, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 491 [2023-11-06 22:29:48,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:29:48,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:29:48,589 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:29:48,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:29:48,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:29:48,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:29:48,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:29:48,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:29:48,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (1/1) ... [2023-11-06 22:29:48,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:29:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:48,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:29:48,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b9f2c-d990-41bd-881f-9745c46eaaaf/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:29:48,767 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:29:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:29:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:29:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:29:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:29:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:29:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:29:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:29:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:29:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:29:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:29:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:29:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:29:48,772 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:29:49,019 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:29:49,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:29:50,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:29:50,039 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:29:50,039 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:29:50,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:50 BoogieIcfgContainer [2023-11-06 22:29:50,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:29:50,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:29:50,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:29:50,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:29:50,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:29:47" (1/3) ... [2023-11-06 22:29:50,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f48d2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:50, skipping insertion in model container [2023-11-06 22:29:50,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:29:48" (2/3) ... [2023-11-06 22:29:50,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f48d2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:29:50, skipping insertion in model container [2023-11-06 22:29:50,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:29:50" (3/3) ... [2023-11-06 22:29:50,057 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-06 22:29:50,068 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:29:50,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:29:50,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-06 22:29:50,080 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:29:50,360 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:29:50,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 555 places, 566 transitions, 1146 flow [2023-11-06 22:29:50,848 INFO L124 PetriNetUnfolderBase]: 18/564 cut-off events. [2023-11-06 22:29:50,849 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:29:50,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 564 events. 18/564 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 845 event pairs, 0 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 433. Up to 2 conditions per place. [2023-11-06 22:29:50,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 555 places, 566 transitions, 1146 flow [2023-11-06 22:29:50,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 554 transitions, 1117 flow [2023-11-06 22:29:50,897 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:29:50,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 543 places, 554 transitions, 1117 flow [2023-11-06 22:29:50,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 543 places, 554 transitions, 1117 flow [2023-11-06 22:29:50,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 554 transitions, 1117 flow [2023-11-06 22:29:51,141 INFO L124 PetriNetUnfolderBase]: 18/554 cut-off events. [2023-11-06 22:29:51,142 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:29:51,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 554 events. 18/554 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 809 event pairs, 0 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 433. Up to 2 conditions per place. [2023-11-06 22:29:51,205 INFO L119 LiptonReduction]: Number of co-enabled transitions 88852 [2023-11-06 22:30:28,392 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 161 DAG size of output: 157 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:30:46,102 WARN L293 SmtUtils]: Spent 14.76s on a formula simplification. DAG size of input: 161 DAG size of output: 157 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:30:53,409 WARN L293 SmtUtils]: Spent 7.31s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:31:06,120 WARN L293 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 212 DAG size of output: 203 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:31:47,913 WARN L293 SmtUtils]: Spent 41.12s on a formula simplification. DAG size of input: 222 DAG size of output: 212 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 22:31:52,087 INFO L134 LiptonReduction]: Checked pairs total: 765347 [2023-11-06 22:31:52,088 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-11-06 22:31:52,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:31:52,134 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@329206f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:31:52,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-11-06 22:31:52,137 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:31:52,137 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:31:52,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:31:52,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:52,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:31:52,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-06 22:31:52,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2008, now seen corresponding path program 1 times [2023-11-06 22:31:52,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:52,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505262924] [2023-11-06 22:31:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:52,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505262924] [2023-11-06 22:31:52,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505262924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:52,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:52,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:31:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409606307] [2023-11-06 22:31:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:52,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:31:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:52,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:31:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:31:52,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 550 out of 929 [2023-11-06 22:31:52,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 275 transitions, 559 flow. Second operand has 2 states, 2 states have (on average 550.5) internal successors, (1101), 2 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:52,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:52,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 550 of 929 [2023-11-06 22:31:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:55,671 INFO L124 PetriNetUnfolderBase]: 4285/13028 cut-off events. [2023-11-06 22:31:55,672 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-06 22:31:55,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20104 conditions, 13028 events. 4285/13028 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 113975 event pairs, 3777 based on Foata normal form. 234/12097 useless extension candidates. Maximal degree in co-relation 19666. Up to 6953 conditions per place. [2023-11-06 22:31:55,879 INFO L140 encePairwiseOnDemand]: 918/929 looper letters, 85 selfloop transitions, 0 changer transitions 0/264 dead transitions. [2023-11-06 22:31:55,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 264 transitions, 707 flow [2023-11-06 22:31:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:31:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:31:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1196 transitions. [2023-11-06 22:31:55,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.643702906350915 [2023-11-06 22:31:55,941 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1196 transitions. [2023-11-06 22:31:55,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1196 transitions. [2023-11-06 22:31:55,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:55,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1196 transitions. [2023-11-06 22:31:55,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 598.0) internal successors, (1196), 2 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:56,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:56,007 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:56,009 INFO L175 Difference]: Start difference. First operand has 271 places, 275 transitions, 559 flow. Second operand 2 states and 1196 transitions. [2023-11-06 22:31:56,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 264 transitions, 707 flow [2023-11-06 22:31:56,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 264 transitions, 702 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:31:56,029 INFO L231 Difference]: Finished difference. Result has 262 places, 264 transitions, 532 flow [2023-11-06 22:31:56,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=929, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=532, PETRI_PLACES=262, PETRI_TRANSITIONS=264} [2023-11-06 22:31:56,037 INFO L281 CegarLoopForPetriNet]: 271 programPoint places, -9 predicate places. [2023-11-06 22:31:56,037 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 264 transitions, 532 flow [2023-11-06 22:31:56,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 550.5) internal successors, (1101), 2 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:56,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:56,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:56,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:31:56,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-06 22:31:56,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:56,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1682189586, now seen corresponding path program 1 times [2023-11-06 22:31:56,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:56,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729831079] [2023-11-06 22:31:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:56,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:56,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729831079] [2023-11-06 22:31:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729831079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81361933] [2023-11-06 22:31:56,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:56,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:56,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:56,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 544 out of 929 [2023-11-06 22:31:56,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 264 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 3 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:56,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:56,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 544 of 929 [2023-11-06 22:31:56,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:01,248 INFO L124 PetriNetUnfolderBase]: 7229/20346 cut-off events. [2023-11-06 22:32:01,248 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:32:01,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32162 conditions, 20346 events. 7229/20346 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 178910 event pairs, 1639 based on Foata normal form. 0/18473 useless extension candidates. Maximal degree in co-relation 32159. Up to 6430 conditions per place. [2023-11-06 22:32:01,418 INFO L140 encePairwiseOnDemand]: 924/929 looper letters, 165 selfloop transitions, 4 changer transitions 0/344 dead transitions. [2023-11-06 22:32:01,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 344 transitions, 1031 flow [2023-11-06 22:32:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:32:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:32:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1802 transitions. [2023-11-06 22:32:01,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6465733763903839 [2023-11-06 22:32:01,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1802 transitions. [2023-11-06 22:32:01,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1802 transitions. [2023-11-06 22:32:01,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:01,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1802 transitions. [2023-11-06 22:32:01,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 3 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:01,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 929.0) internal successors, (3716), 4 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:01,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 929.0) internal successors, (3716), 4 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:01,457 INFO L175 Difference]: Start difference. First operand has 262 places, 264 transitions, 532 flow. Second operand 3 states and 1802 transitions. [2023-11-06 22:32:01,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 344 transitions, 1031 flow [2023-11-06 22:32:01,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 344 transitions, 1031 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:32:01,469 INFO L231 Difference]: Finished difference. Result has 266 places, 268 transitions, 566 flow [2023-11-06 22:32:01,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=929, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=266, PETRI_TRANSITIONS=268} [2023-11-06 22:32:01,472 INFO L281 CegarLoopForPetriNet]: 271 programPoint places, -5 predicate places. [2023-11-06 22:32:01,472 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 268 transitions, 566 flow [2023-11-06 22:32:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 3 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:01,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:01,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:01,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:32:01,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-06 22:32:01,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash -647170276, now seen corresponding path program 1 times [2023-11-06 22:32:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637850552] [2023-11-06 22:32:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:02,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637850552] [2023-11-06 22:32:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637850552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:02,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:02,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:32:02,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67144596] [2023-11-06 22:32:02,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:02,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:32:02,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:02,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:32:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:32:04,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 929 [2023-11-06 22:32:04,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 268 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 449.5) internal successors, (2697), 6 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:04,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:04,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 929 [2023-11-06 22:32:04,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:14,568 INFO L124 PetriNetUnfolderBase]: 25855/52136 cut-off events. [2023-11-06 22:32:14,568 INFO L125 PetriNetUnfolderBase]: For 904/904 co-relation queries the response was YES. [2023-11-06 22:32:14,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95892 conditions, 52136 events. 25855/52136 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 421628 event pairs, 14118 based on Foata normal form. 0/47820 useless extension candidates. Maximal degree in co-relation 95887. Up to 31072 conditions per place. [2023-11-06 22:32:14,984 INFO L140 encePairwiseOnDemand]: 873/929 looper letters, 286 selfloop transitions, 86 changer transitions 0/486 dead transitions. [2023-11-06 22:32:14,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 486 transitions, 1778 flow [2023-11-06 22:32:14,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:32:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:32:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3061 transitions. [2023-11-06 22:32:14,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549156799425906 [2023-11-06 22:32:14,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3061 transitions. [2023-11-06 22:32:14,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3061 transitions. [2023-11-06 22:32:15,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:15,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3061 transitions. [2023-11-06 22:32:15,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 510.1666666666667) internal successors, (3061), 6 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 929.0) internal successors, (6503), 7 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 929.0) internal successors, (6503), 7 states have internal predecessors, (6503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,038 INFO L175 Difference]: Start difference. First operand has 266 places, 268 transitions, 566 flow. Second operand 6 states and 3061 transitions. [2023-11-06 22:32:15,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 486 transitions, 1778 flow [2023-11-06 22:32:15,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 486 transitions, 1762 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:32:15,067 INFO L231 Difference]: Finished difference. Result has 274 places, 350 transitions, 1170 flow [2023-11-06 22:32:15,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=929, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1170, PETRI_PLACES=274, PETRI_TRANSITIONS=350} [2023-11-06 22:32:15,070 INFO L281 CegarLoopForPetriNet]: 271 programPoint places, 3 predicate places. [2023-11-06 22:32:15,070 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 350 transitions, 1170 flow [2023-11-06 22:32:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 449.5) internal successors, (2697), 6 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:15,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:15,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:15,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:32:15,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-11-06 22:32:15,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1626298991, now seen corresponding path program 1 times [2023-11-06 22:32:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:15,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601739216] [2023-11-06 22:32:15,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:15,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:15,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601739216] [2023-11-06 22:32:15,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601739216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:15,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:15,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:32:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774254333] [2023-11-06 22:32:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:32:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:32:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:32:17,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 476 out of 929 [2023-11-06 22:32:17,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 350 transitions, 1170 flow. Second operand has 6 states, 6 states have (on average 477.6666666666667) internal successors, (2866), 6 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:17,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:17,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 476 of 929 [2023-11-06 22:32:17,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand