./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/07_rand.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_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/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_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/07_rand.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/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_466fba3c-fe6d-4429-bceb-422bc7830f3c/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 205a9486f54af3fadf53566888e578b0d398a9ea9e18a2466103c3619a5ade13 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:25:44,615 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:25:44,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:25:44,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:25:44,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:25:44,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:25:44,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:25:44,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:25:44,717 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:25:44,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:25:44,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:25:44,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:25:44,720 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:25:44,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:25:44,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:25:44,722 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:25:44,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:25:44,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:25:44,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:25:44,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:25:44,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:25:44,725 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:25:44,726 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:25:44,727 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:25:44,727 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:25:44,728 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:25:44,728 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:25:44,729 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:25:44,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:25:44,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:25:44,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:25:44,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:25:44,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:25:44,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:25:44,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:25:44,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:25:44,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:25:44,734 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:25:44,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:25:44,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:25:44,735 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:25:44,736 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_466fba3c-fe6d-4429-bceb-422bc7830f3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 205a9486f54af3fadf53566888e578b0d398a9ea9e18a2466103c3619a5ade13 [2023-11-06 22:25:44,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:25:45,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:25:45,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:25:45,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:25:45,037 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:25:45,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/07_rand.i [2023-11-06 22:25:48,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:25:48,411 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:25:48,412 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/sv-benchmarks/c/pthread-ext/07_rand.i [2023-11-06 22:25:48,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/data/cd58326ac/6df9208099274401a7e382a904888c27/FLAGe438e6835 [2023-11-06 22:25:48,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/data/cd58326ac/6df9208099274401a7e382a904888c27 [2023-11-06 22:25:48,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:25:48,449 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:25:48,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:25:48,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:25:48,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:25:48,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:48" (1/1) ... [2023-11-06 22:25:48,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ac59ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:48, skipping insertion in model container [2023-11-06 22:25:48,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:48" (1/1) ... [2023-11-06 22:25:48,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:25:49,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:25:49,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:25:49,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:25:49,162 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:25:49,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49 WrapperNode [2023-11-06 22:25:49,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:25:49,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:25:49,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:25:49,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:25:49,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,217 INFO L138 Inliner]: procedures = 174, calls = 24, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 171 [2023-11-06 22:25:49,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:25:49,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:25:49,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:25:49,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:25:49,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,255 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:25:49,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:25:49,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:25:49,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:25:49,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (1/1) ... [2023-11-06 22:25:49,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:25:49,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:49,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:25:49,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_466fba3c-fe6d-4429-bceb-422bc7830f3c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:25:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:25:49,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:25:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:25:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:25:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:25:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:25:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:25:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:25:49,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:25:49,349 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 22:25:49,541 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:25:49,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:25:49,899 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:25:50,060 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:25:50,060 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:25:50,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:50 BoogieIcfgContainer [2023-11-06 22:25:50,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:25:50,067 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:25:50,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:25:50,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:25:50,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:25:48" (1/3) ... [2023-11-06 22:25:50,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9824cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:50, skipping insertion in model container [2023-11-06 22:25:50,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:49" (2/3) ... [2023-11-06 22:25:50,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9824cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:50, skipping insertion in model container [2023-11-06 22:25:50,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:50" (3/3) ... [2023-11-06 22:25:50,075 INFO L112 eAbstractionObserver]: Analyzing ICFG 07_rand.i [2023-11-06 22:25:50,116 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:25:50,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:25:50,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:25:50,129 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:25:50,208 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:50,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 142 transitions, 288 flow [2023-11-06 22:25:50,363 INFO L124 PetriNetUnfolderBase]: 14/153 cut-off events. [2023-11-06 22:25:50,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:50,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 153 events. 14/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 264 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 128. Up to 4 conditions per place. [2023-11-06 22:25:50,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 142 transitions, 288 flow [2023-11-06 22:25:50,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 142 transitions, 288 flow [2023-11-06 22:25:50,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:50,406 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 142 transitions, 288 flow [2023-11-06 22:25:50,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 142 transitions, 288 flow [2023-11-06 22:25:50,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 142 transitions, 288 flow [2023-11-06 22:25:50,475 INFO L124 PetriNetUnfolderBase]: 14/153 cut-off events. [2023-11-06 22:25:50,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 153 events. 14/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 264 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 128. Up to 4 conditions per place. [2023-11-06 22:25:50,489 INFO L119 LiptonReduction]: Number of co-enabled transitions 3220 [2023-11-06 22:25:54,900 INFO L134 LiptonReduction]: Checked pairs total: 3270 [2023-11-06 22:25:54,900 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-11-06 22:25:54,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:54,922 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;@26b0f52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:54,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-06 22:25:54,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:54,926 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:25:54,926 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:54,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:54,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:25:54,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:25:54,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash 26084438, now seen corresponding path program 1 times [2023-11-06 22:25:54,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116595975] [2023-11-06 22:25:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:54,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:55,130 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 22:25:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:55,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116595975] [2023-11-06 22:25:55,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116595975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:55,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:55,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:55,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348927050] [2023-11-06 22:25:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:55,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:25:55,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:55,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:25:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:25:55,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 338 [2023-11-06 22:25:55,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 29 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 114.0) internal successors, (228), 2 states have internal predecessors, (228), 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 22:25:55,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:55,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 338 [2023-11-06 22:25:55,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:55,213 INFO L124 PetriNetUnfolderBase]: 15/33 cut-off events. [2023-11-06 22:25:55,213 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:55,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 33 events. 15/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 6 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 52. Up to 30 conditions per place. [2023-11-06 22:25:55,215 INFO L140 encePairwiseOnDemand]: 320/338 looper letters, 10 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-11-06 22:25:55,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 11 transitions, 46 flow [2023-11-06 22:25:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:25:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:25:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2023-11-06 22:25:55,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727810650887574 [2023-11-06 22:25:55,234 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2023-11-06 22:25:55,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2023-11-06 22:25:55,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:55,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2023-11-06 22:25:55,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 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 22:25:55,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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 22:25:55,251 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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 22:25:55,253 INFO L175 Difference]: Start difference. First operand has 28 places, 29 transitions, 62 flow. Second operand 2 states and 252 transitions. [2023-11-06 22:25:55,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 11 transitions, 46 flow [2023-11-06 22:25:55,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:55,258 INFO L231 Difference]: Finished difference. Result has 12 places, 11 transitions, 26 flow [2023-11-06 22:25:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=12, PETRI_TRANSITIONS=11} [2023-11-06 22:25:55,264 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -16 predicate places. [2023-11-06 22:25:55,264 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 11 transitions, 26 flow [2023-11-06 22:25:55,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 114.0) internal successors, (228), 2 states have internal predecessors, (228), 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 22:25:55,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:55,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:25:55,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:25:55,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-11-06 22:25:55,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash -702635258, now seen corresponding path program 1 times [2023-11-06 22:25:55,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:55,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342360746] [2023-11-06 22:25:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:55,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:25:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:25:55,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:25:55,330 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:25:55,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-11-06 22:25:55,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-11-06 22:25:55,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-11-06 22:25:55,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-11-06 22:25:55,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-11-06 22:25:55,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-11-06 22:25:55,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-11-06 22:25:55,335 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-11-06 22:25:55,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-11-06 22:25:55,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-11-06 22:25:55,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-11-06 22:25:55,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-11-06 22:25:55,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-11-06 22:25:55,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-11-06 22:25:55,337 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-11-06 22:25:55,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-11-06 22:25:55,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-11-06 22:25:55,338 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-11-06 22:25:55,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-11-06 22:25:55,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-11-06 22:25:55,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-11-06 22:25:55,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-11-06 22:25:55,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-11-06 22:25:55,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-11-06 22:25:55,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-11-06 22:25:55,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-11-06 22:25:55,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-11-06 22:25:55,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-11-06 22:25:55,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-11-06 22:25:55,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-11-06 22:25:55,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-11-06 22:25:55,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-11-06 22:25:55,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-11-06 22:25:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:25:55,343 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:25:55,346 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:25:55,347 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:25:55,388 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:25:55,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 258 transitions, 526 flow [2023-11-06 22:25:55,477 INFO L124 PetriNetUnfolderBase]: 27/282 cut-off events. [2023-11-06 22:25:55,477 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 282 events. 27/282 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 924 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 243. Up to 6 conditions per place. [2023-11-06 22:25:55,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 258 transitions, 526 flow [2023-11-06 22:25:55,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 258 transitions, 526 flow [2023-11-06 22:25:55,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:55,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 258 transitions, 526 flow [2023-11-06 22:25:55,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 258 transitions, 526 flow [2023-11-06 22:25:55,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 258 transitions, 526 flow [2023-11-06 22:25:55,573 INFO L124 PetriNetUnfolderBase]: 27/282 cut-off events. [2023-11-06 22:25:55,574 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:55,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 282 events. 27/282 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 924 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 243. Up to 6 conditions per place. [2023-11-06 22:25:55,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 33120 [2023-11-06 22:25:59,450 INFO L134 LiptonReduction]: Checked pairs total: 95725 [2023-11-06 22:25:59,451 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-11-06 22:25:59,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:59,461 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;@26b0f52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:59,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-06 22:25:59,463 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:59,464 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-11-06 22:25:59,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:25:59,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:59,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:25:59,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:25:59,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:59,468 INFO L85 PathProgramCache]: Analyzing trace with hash 45621597, now seen corresponding path program 1 times [2023-11-06 22:25:59,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:59,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25668343] [2023-11-06 22:25:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:59,545 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 22:25:59,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:59,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25668343] [2023-11-06 22:25:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25668343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:25:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905097306] [2023-11-06 22:25:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:25:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:59,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:25:59,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:25:59,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 510 [2023-11-06 22:25:59,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 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 22:25:59,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:59,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 510 [2023-11-06 22:25:59,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:59,887 INFO L124 PetriNetUnfolderBase]: 1122/2338 cut-off events. [2023-11-06 22:25:59,888 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-06 22:25:59,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4163 conditions, 2338 events. 1122/2338 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16571 event pairs, 870 based on Foata normal form. 106/1957 useless extension candidates. Maximal degree in co-relation 1942. Up to 1769 conditions per place. [2023-11-06 22:25:59,913 INFO L140 encePairwiseOnDemand]: 485/510 looper letters, 42 selfloop transitions, 0 changer transitions 0/73 dead transitions. [2023-11-06 22:25:59,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 240 flow [2023-11-06 22:25:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:25:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:25:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 467 transitions. [2023-11-06 22:25:59,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45784313725490194 [2023-11-06 22:25:59,919 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 467 transitions. [2023-11-06 22:25:59,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 467 transitions. [2023-11-06 22:25:59,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:59,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 467 transitions. [2023-11-06 22:25:59,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 233.5) internal successors, (467), 2 states have internal predecessors, (467), 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 22:25:59,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 510.0) internal successors, (1530), 3 states have internal predecessors, (1530), 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 22:25:59,930 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 510.0) internal successors, (1530), 3 states have internal predecessors, (1530), 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 22:25:59,930 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 206 flow. Second operand 2 states and 467 transitions. [2023-11-06 22:25:59,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 240 flow [2023-11-06 22:25:59,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:25:59,934 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 156 flow [2023-11-06 22:25:59,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-11-06 22:25:59,935 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -20 predicate places. [2023-11-06 22:25:59,936 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 156 flow [2023-11-06 22:25:59,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 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 22:25:59,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:59,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:25:59,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:25:59,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:25:59,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash 892718495, now seen corresponding path program 1 times [2023-11-06 22:25:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481181898] [2023-11-06 22:25:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:00,014 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 22:26:00,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:00,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481181898] [2023-11-06 22:26:00,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481181898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:00,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:00,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854423470] [2023-11-06 22:26:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:00,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 510 [2023-11-06 22:26:00,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 22:26:00,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:00,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 510 [2023-11-06 22:26:00,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:00,609 INFO L124 PetriNetUnfolderBase]: 1758/3484 cut-off events. [2023-11-06 22:26:00,609 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-06 22:26:00,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 3484 events. 1758/3484 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25827 event pairs, 595 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 6336. Up to 2063 conditions per place. [2023-11-06 22:26:00,643 INFO L140 encePairwiseOnDemand]: 502/510 looper letters, 88 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-11-06 22:26:00,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 439 flow [2023-11-06 22:26:00,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:00,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-11-06 22:26:00,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392156862745098 [2023-11-06 22:26:00,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-11-06 22:26:00,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-11-06 22:26:00,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:00,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-11-06 22:26:00,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 22:26:00,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 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 22:26:00,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 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 22:26:00,659 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 156 flow. Second operand 3 states and 672 transitions. [2023-11-06 22:26:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 439 flow [2023-11-06 22:26:00,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 439 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:00,664 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 208 flow [2023-11-06 22:26:00,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-11-06 22:26:00,665 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -16 predicate places. [2023-11-06 22:26:00,665 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 208 flow [2023-11-06 22:26:00,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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 22:26:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:00,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:26:00,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:26:00,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -422223307, now seen corresponding path program 1 times [2023-11-06 22:26:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271817131] [2023-11-06 22:26:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:00,726 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 22:26:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:00,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271817131] [2023-11-06 22:26:00,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271817131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:00,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:00,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052002162] [2023-11-06 22:26:00,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:00,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:00,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 510 [2023-11-06 22:26:00,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 22:26:00,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:00,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 510 [2023-11-06 22:26:00,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:01,257 INFO L124 PetriNetUnfolderBase]: 1687/3471 cut-off events. [2023-11-06 22:26:01,258 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-11-06 22:26:01,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 3471 events. 1687/3471 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 26562 event pairs, 1197 based on Foata normal form. 0/2774 useless extension candidates. Maximal degree in co-relation 6418. Up to 2582 conditions per place. [2023-11-06 22:26:01,295 INFO L140 encePairwiseOnDemand]: 503/510 looper letters, 63 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2023-11-06 22:26:01,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 401 flow [2023-11-06 22:26:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-11-06 22:26:01,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40980392156862744 [2023-11-06 22:26:01,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-11-06 22:26:01,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-11-06 22:26:01,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:01,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-11-06 22:26:01,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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 22:26:01,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 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 22:26:01,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 510.0) internal successors, (2040), 4 states have internal predecessors, (2040), 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 22:26:01,309 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 208 flow. Second operand 3 states and 627 transitions. [2023-11-06 22:26:01,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 401 flow [2023-11-06 22:26:01,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 387 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:01,319 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 236 flow [2023-11-06 22:26:01,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=510, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2023-11-06 22:26:01,321 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -15 predicate places. [2023-11-06 22:26:01,322 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 236 flow [2023-11-06 22:26:01,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 22:26:01,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:01,323 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:26:01,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:26:01,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-06 22:26:01,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1083195492, now seen corresponding path program 1 times [2023-11-06 22:26:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:01,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756796047] [2023-11-06 22:26:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:01,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:01,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:01,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:01,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:26:01,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2023-11-06 22:26:01,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2023-11-06 22:26:01,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2023-11-06 22:26:01,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2023-11-06 22:26:01,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2023-11-06 22:26:01,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2023-11-06 22:26:01,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2023-11-06 22:26:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2023-11-06 22:26:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2023-11-06 22:26:01,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2023-11-06 22:26:01,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2023-11-06 22:26:01,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2023-11-06 22:26:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2023-11-06 22:26:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2023-11-06 22:26:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2023-11-06 22:26:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2023-11-06 22:26:01,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2023-11-06 22:26:01,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2023-11-06 22:26:01,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2023-11-06 22:26:01,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2023-11-06 22:26:01,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2023-11-06 22:26:01,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2023-11-06 22:26:01,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2023-11-06 22:26:01,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2023-11-06 22:26:01,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2023-11-06 22:26:01,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2023-11-06 22:26:01,410 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2023-11-06 22:26:01,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2023-11-06 22:26:01,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2023-11-06 22:26:01,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2023-11-06 22:26:01,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2023-11-06 22:26:01,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2023-11-06 22:26:01,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2023-11-06 22:26:01,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2023-11-06 22:26:01,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2023-11-06 22:26:01,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2023-11-06 22:26:01,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2023-11-06 22:26:01,412 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2023-11-06 22:26:01,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2023-11-06 22:26:01,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2023-11-06 22:26:01,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2023-11-06 22:26:01,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2023-11-06 22:26:01,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2023-11-06 22:26:01,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2023-11-06 22:26:01,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2023-11-06 22:26:01,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2023-11-06 22:26:01,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2023-11-06 22:26:01,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2023-11-06 22:26:01,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2023-11-06 22:26:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:26:01,415 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:26:01,416 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:26:01,416 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:26:01,495 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:26:01,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 374 transitions, 766 flow [2023-11-06 22:26:01,609 INFO L124 PetriNetUnfolderBase]: 40/411 cut-off events. [2023-11-06 22:26:01,609 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:26:01,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 411 events. 40/411 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1699 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 358. Up to 8 conditions per place. [2023-11-06 22:26:01,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 374 transitions, 766 flow [2023-11-06 22:26:01,628 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 374 transitions, 766 flow [2023-11-06 22:26:01,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:26:01,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 374 transitions, 766 flow [2023-11-06 22:26:01,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 374 transitions, 766 flow [2023-11-06 22:26:01,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 374 transitions, 766 flow [2023-11-06 22:26:01,736 INFO L124 PetriNetUnfolderBase]: 40/411 cut-off events. [2023-11-06 22:26:01,736 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:26:01,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 411 events. 40/411 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1699 event pairs, 0 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 358. Up to 8 conditions per place. [2023-11-06 22:26:01,790 INFO L119 LiptonReduction]: Number of co-enabled transitions 89700 [2023-11-06 22:26:08,603 INFO L134 LiptonReduction]: Checked pairs total: 250478 [2023-11-06 22:26:08,603 INFO L136 LiptonReduction]: Total number of compositions: 375 [2023-11-06 22:26:08,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:08,606 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;@26b0f52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:08,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-06 22:26:08,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:26:08,608 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-06 22:26:08,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:26:08,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:08,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:26:08,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:26:08,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash 72660027, now seen corresponding path program 1 times [2023-11-06 22:26:08,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:08,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164110068] [2023-11-06 22:26:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:08,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:08,625 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 22:26:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164110068] [2023-11-06 22:26:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164110068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:08,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:08,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:26:08,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740425149] [2023-11-06 22:26:08,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:08,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:26:08,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:08,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:26:08,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:26:08,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 749 [2023-11-06 22:26:08,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 144 transitions, 306 flow. Second operand has 2 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 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 22:26:08,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:08,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 749 [2023-11-06 22:26:08,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:14,951 INFO L124 PetriNetUnfolderBase]: 35390/58382 cut-off events. [2023-11-06 22:26:14,952 INFO L125 PetriNetUnfolderBase]: For 2116/2116 co-relation queries the response was YES. [2023-11-06 22:26:15,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107352 conditions, 58382 events. 35390/58382 cut-off events. For 2116/2116 co-relation queries the response was YES. Maximal size of possible extension queue 2502. Compared 528464 event pairs, 28045 based on Foata normal form. 1977/49766 useless extension candidates. Maximal degree in co-relation 11536. Up to 47622 conditions per place. [2023-11-06 22:26:15,496 INFO L140 encePairwiseOnDemand]: 712/749 looper letters, 63 selfloop transitions, 0 changer transitions 0/107 dead transitions. [2023-11-06 22:26:15,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 107 transitions, 358 flow [2023-11-06 22:26:15,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:26:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:26:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 676 transitions. [2023-11-06 22:26:15,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512683578104139 [2023-11-06 22:26:15,502 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 676 transitions. [2023-11-06 22:26:15,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 676 transitions. [2023-11-06 22:26:15,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:15,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 676 transitions. [2023-11-06 22:26:15,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 338.0) internal successors, (676), 2 states have internal predecessors, (676), 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 22:26:15,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 749.0) internal successors, (2247), 3 states have internal predecessors, (2247), 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 22:26:15,513 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 749.0) internal successors, (2247), 3 states have internal predecessors, (2247), 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 22:26:15,514 INFO L175 Difference]: Start difference. First operand has 136 places, 144 transitions, 306 flow. Second operand 2 states and 676 transitions. [2023-11-06 22:26:15,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 107 transitions, 358 flow [2023-11-06 22:26:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 356 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:15,525 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 230 flow [2023-11-06 22:26:15,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=749, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=230, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2023-11-06 22:26:15,527 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -30 predicate places. [2023-11-06 22:26:15,528 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 230 flow [2023-11-06 22:26:15,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 290.0) internal successors, (580), 2 states have internal predecessors, (580), 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 22:26:15,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:15,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:26:15,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:26:15,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:26:15,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1106866942, now seen corresponding path program 1 times [2023-11-06 22:26:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824812817] [2023-11-06 22:26:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:15,586 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 22:26:15,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824812817] [2023-11-06 22:26:15,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824812817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:15,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884564056] [2023-11-06 22:26:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:15,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 749 [2023-11-06 22:26:15,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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 22:26:15,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:15,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 749 [2023-11-06 22:26:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:25,935 INFO L124 PetriNetUnfolderBase]: 69577/112366 cut-off events. [2023-11-06 22:26:25,936 INFO L125 PetriNetUnfolderBase]: For 1766/1766 co-relation queries the response was YES. [2023-11-06 22:26:26,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208280 conditions, 112366 events. 69577/112366 cut-off events. For 1766/1766 co-relation queries the response was YES. Maximal size of possible extension queue 4659. Compared 1059426 event pairs, 26099 based on Foata normal form. 0/94663 useless extension candidates. Maximal degree in co-relation 208274. Up to 63046 conditions per place. [2023-11-06 22:26:26,932 INFO L140 encePairwiseOnDemand]: 737/749 looper letters, 130 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2023-11-06 22:26:26,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 652 flow [2023-11-06 22:26:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:26,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 970 transitions. [2023-11-06 22:26:26,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43168669336893634 [2023-11-06 22:26:26,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 970 transitions. [2023-11-06 22:26:26,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 970 transitions. [2023-11-06 22:26:26,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:26,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 970 transitions. [2023-11-06 22:26:26,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 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 22:26:26,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 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 22:26:26,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 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 22:26:26,950 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 230 flow. Second operand 3 states and 970 transitions. [2023-11-06 22:26:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 652 flow [2023-11-06 22:26:26,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 174 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:26:26,963 INFO L231 Difference]: Finished difference. Result has 110 places, 116 transitions, 308 flow [2023-11-06 22:26:26,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=749, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=110, PETRI_TRANSITIONS=116} [2023-11-06 22:26:26,965 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -26 predicate places. [2023-11-06 22:26:26,966 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 116 transitions, 308 flow [2023-11-06 22:26:26,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 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 22:26:26,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:26,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:26:26,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:26:26,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -168180519, now seen corresponding path program 1 times [2023-11-06 22:26:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087010560] [2023-11-06 22:26:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:27,017 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 22:26:27,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:27,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087010560] [2023-11-06 22:26:27,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087010560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:27,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:27,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:27,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215677958] [2023-11-06 22:26:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:27,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:27,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:27,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:27,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:27,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 749 [2023-11-06 22:26:27,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 116 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 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 22:26:27,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:27,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 749 [2023-11-06 22:26:27,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:37,954 INFO L124 PetriNetUnfolderBase]: 75946/122894 cut-off events. [2023-11-06 22:26:37,955 INFO L125 PetriNetUnfolderBase]: For 8844/8844 co-relation queries the response was YES. [2023-11-06 22:26:38,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236860 conditions, 122894 events. 75946/122894 cut-off events. For 8844/8844 co-relation queries the response was YES. Maximal size of possible extension queue 5307. Compared 1174187 event pairs, 55046 based on Foata normal form. 0/101477 useless extension candidates. Maximal degree in co-relation 236852. Up to 99814 conditions per place. [2023-11-06 22:26:39,043 INFO L140 encePairwiseOnDemand]: 738/749 looper letters, 108 selfloop transitions, 10 changer transitions 0/163 dead transitions. [2023-11-06 22:26:39,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 163 transitions, 660 flow [2023-11-06 22:26:39,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 924 transitions. [2023-11-06 22:26:39,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.411214953271028 [2023-11-06 22:26:39,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 924 transitions. [2023-11-06 22:26:39,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 924 transitions. [2023-11-06 22:26:39,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:39,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 924 transitions. [2023-11-06 22:26:39,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 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 22:26:39,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 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 22:26:39,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 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 22:26:39,067 INFO L175 Difference]: Start difference. First operand has 110 places, 116 transitions, 308 flow. Second operand 3 states and 924 transitions. [2023-11-06 22:26:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 163 transitions, 660 flow [2023-11-06 22:26:39,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 163 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:26:39,269 INFO L231 Difference]: Finished difference. Result has 111 places, 125 transitions, 358 flow [2023-11-06 22:26:39,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=749, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=111, PETRI_TRANSITIONS=125} [2023-11-06 22:26:39,270 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -25 predicate places. [2023-11-06 22:26:39,270 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 125 transitions, 358 flow [2023-11-06 22:26:39,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 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 22:26:39,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:39,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:26:39,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err12ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:26:39,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2098228099, now seen corresponding path program 1 times [2023-11-06 22:26:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752910072] [2023-11-06 22:26:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:39,317 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 22:26:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:39,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752910072] [2023-11-06 22:26:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752910072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:39,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:39,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874956347] [2023-11-06 22:26:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:39,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:39,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 749 [2023-11-06 22:26:39,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 125 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 22:26:39,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:39,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 749 [2023-11-06 22:26:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:26:47,778 INFO L124 PetriNetUnfolderBase]: 57946/96750 cut-off events. [2023-11-06 22:26:47,778 INFO L125 PetriNetUnfolderBase]: For 12109/12719 co-relation queries the response was YES. [2023-11-06 22:26:48,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198496 conditions, 96750 events. 57946/96750 cut-off events. For 12109/12719 co-relation queries the response was YES. Maximal size of possible extension queue 4552. Compared 947460 event pairs, 18934 based on Foata normal form. 16/83313 useless extension candidates. Maximal degree in co-relation 198487. Up to 52068 conditions per place. [2023-11-06 22:26:48,743 INFO L140 encePairwiseOnDemand]: 740/749 looper letters, 133 selfloop transitions, 7 changer transitions 0/193 dead transitions. [2023-11-06 22:26:48,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 193 transitions, 829 flow [2023-11-06 22:26:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:26:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:26:48,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 976 transitions. [2023-11-06 22:26:48,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43435692033822876 [2023-11-06 22:26:48,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 976 transitions. [2023-11-06 22:26:48,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 976 transitions. [2023-11-06 22:26:48,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:26:48,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 976 transitions. [2023-11-06 22:26:48,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 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 22:26:48,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 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 22:26:48,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 749.0) internal successors, (2996), 4 states have internal predecessors, (2996), 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 22:26:48,758 INFO L175 Difference]: Start difference. First operand has 111 places, 125 transitions, 358 flow. Second operand 3 states and 976 transitions. [2023-11-06 22:26:48,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 193 transitions, 829 flow [2023-11-06 22:26:48,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 193 transitions, 812 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:26:48,906 INFO L231 Difference]: Finished difference. Result has 114 places, 131 transitions, 404 flow [2023-11-06 22:26:48,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=749, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=114, PETRI_TRANSITIONS=131} [2023-11-06 22:26:48,906 INFO L281 CegarLoopForPetriNet]: 136 programPoint places, -22 predicate places. [2023-11-06 22:26:48,907 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 131 transitions, 404 flow [2023-11-06 22:26:48,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 22:26:48,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:26:48,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:48,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:26:48,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-06 22:26:48,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1969784583, now seen corresponding path program 1 times [2023-11-06 22:26:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:48,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758080133] [2023-11-06 22:26:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:48,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:48,932 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 22:26:48,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758080133] [2023-11-06 22:26:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758080133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:48,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594427757] [2023-11-06 22:26:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:48,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:26:48,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:26:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:26:48,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 749 [2023-11-06 22:26:48,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 131 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 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 22:26:48,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:26:48,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 749 [2023-11-06 22:26:48,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand