./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:12,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:12,843 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:15:12,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:12,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:12,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:12,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:12,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:12,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:12,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:12,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:12,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:12,886 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:12,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:12,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:15:12,890 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:12,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:12,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:12,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:12,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:15:12,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:12,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:15:12,893 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:15:12,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:12,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:15:12,894 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:12,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:15:12,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:12,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:12,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:12,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:12,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:12,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:12,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:12,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:15:12,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:12,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:12,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:12,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:12,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:12,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:12,899 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_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2024-10-31 22:15:13,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:13,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:13,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:13,232 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:13,233 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:13,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i Unable to find full path for "g++" [2024-10-31 22:15:15,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:15,528 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:15,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2024-10-31 22:15:15,547 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/data/6726a63c7/d6975d8a2aa841d2a239bc05dd2913d8/FLAG0b6a4427a [2024-10-31 22:15:15,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/data/6726a63c7/d6975d8a2aa841d2a239bc05dd2913d8 [2024-10-31 22:15:15,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:15,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:15,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:15,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:15,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:15,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709924b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:15, skipping insertion in model container [2024-10-31 22:15:15,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:15" (1/1) ... [2024-10-31 22:15:15,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:16,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:16,127 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:16,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:16,247 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:16,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16 WrapperNode [2024-10-31 22:15:16,247 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:16,248 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:16,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:16,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:16,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,300 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2024-10-31 22:15:16,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:16,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:16,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:16,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:16,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:16,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:16,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:16,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:16,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (1/1) ... [2024-10-31 22:15:16,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:16,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:16,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:15:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:15:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:15:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:15:16,440 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:15:16,441 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:15:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:15:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:15:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:15:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:16,444 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:15:16,575 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:16,577 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:16,885 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:15:16,885 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:16,967 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:16,967 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-31 22:15:16,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:16 BoogieIcfgContainer [2024-10-31 22:15:16,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:16,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:16,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:16,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:16,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:15" (1/3) ... [2024-10-31 22:15:16,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34839dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:16, skipping insertion in model container [2024-10-31 22:15:16,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:16" (2/3) ... [2024-10-31 22:15:16,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34839dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:16, skipping insertion in model container [2024-10-31 22:15:16,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:16" (3/3) ... [2024-10-31 22:15:16,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2024-10-31 22:15:17,007 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:17,008 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-31 22:15:17,008 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:15:17,094 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:15:17,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 147 transitions, 301 flow [2024-10-31 22:15:17,233 INFO L124 PetriNetUnfolderBase]: 19/206 cut-off events. [2024-10-31 22:15:17,233 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:15:17,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 206 events. 19/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 628 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2024-10-31 22:15:17,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 147 transitions, 301 flow [2024-10-31 22:15:17,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 147 transitions, 301 flow [2024-10-31 22:15:17,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:17,273 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41aebb83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:17,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-31 22:15:17,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:17,287 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-10-31 22:15:17,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:17,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:17,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:17,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 22:15:17,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1629330204, now seen corresponding path program 1 times [2024-10-31 22:15:17,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:17,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265248089] [2024-10-31 22:15:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:17,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:17,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265248089] [2024-10-31 22:15:17,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265248089] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:17,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:17,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:17,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429493335] [2024-10-31 22:15:17,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:17,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:17,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:17,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 147 [2024-10-31 22:15:17,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 147 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2024-10-31 22:15:17,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:17,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 147 [2024-10-31 22:15:17,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:18,077 INFO L124 PetriNetUnfolderBase]: 48/531 cut-off events. [2024-10-31 22:15:18,079 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:15:18,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 531 events. 48/531 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2501 event pairs, 35 based on Foata normal form. 62/538 useless extension candidates. Maximal degree in co-relation 575. Up to 108 conditions per place. [2024-10-31 22:15:18,085 INFO L140 encePairwiseOnDemand]: 132/147 looper letters, 22 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2024-10-31 22:15:18,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 139 transitions, 333 flow [2024-10-31 22:15:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2024-10-31 22:15:18,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-10-31 22:15:18,108 INFO L175 Difference]: Start difference. First operand has 137 places, 147 transitions, 301 flow. Second operand 3 states and 392 transitions. [2024-10-31 22:15:18,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 139 transitions, 333 flow [2024-10-31 22:15:18,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 333 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:18,120 INFO L231 Difference]: Finished difference. Result has 138 places, 133 transitions, 281 flow [2024-10-31 22:15:18,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=138, PETRI_TRANSITIONS=133} [2024-10-31 22:15:18,128 INFO L277 CegarLoopForPetriNet]: 137 programPoint places, 1 predicate places. [2024-10-31 22:15:18,128 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 133 transitions, 281 flow [2024-10-31 22:15:18,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2024-10-31 22:15:18,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:18,130 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:18,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:18,131 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 22:15:18,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1109750366, now seen corresponding path program 1 times [2024-10-31 22:15:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:18,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577853795] [2024-10-31 22:15:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:18,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:18,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577853795] [2024-10-31 22:15:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577853795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:18,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:18,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:15:18,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576525843] [2024-10-31 22:15:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:18,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:18,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:15:19,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 147 [2024-10-31 22:15:19,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 133 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:19,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:19,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 147 [2024-10-31 22:15:19,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:19,353 INFO L124 PetriNetUnfolderBase]: 108/637 cut-off events. [2024-10-31 22:15:19,353 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-31 22:15:19,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 637 events. 108/637 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3633 event pairs, 7 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 831. Up to 181 conditions per place. [2024-10-31 22:15:19,359 INFO L140 encePairwiseOnDemand]: 141/147 looper letters, 48 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2024-10-31 22:15:19,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 156 transitions, 433 flow [2024-10-31 22:15:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:15:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:15:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 678 transitions. [2024-10-31 22:15:19,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7687074829931972 [2024-10-31 22:15:19,364 INFO L175 Difference]: Start difference. First operand has 138 places, 133 transitions, 281 flow. Second operand 6 states and 678 transitions. [2024-10-31 22:15:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 156 transitions, 433 flow [2024-10-31 22:15:19,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 156 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:19,368 INFO L231 Difference]: Finished difference. Result has 140 places, 132 transitions, 285 flow [2024-10-31 22:15:19,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=140, PETRI_TRANSITIONS=132} [2024-10-31 22:15:19,369 INFO L277 CegarLoopForPetriNet]: 137 programPoint places, 3 predicate places. [2024-10-31 22:15:19,370 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 132 transitions, 285 flow [2024-10-31 22:15:19,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.5) internal successors, (633), 6 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:19,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:19,371 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:19,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:15:19,371 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 22:15:19,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1567470371, now seen corresponding path program 1 times [2024-10-31 22:15:19,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:19,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117765429] [2024-10-31 22:15:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:19,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117765429] [2024-10-31 22:15:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117765429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:19,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:19,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:19,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679644428] [2024-10-31 22:15:19,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:19,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:19,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:19,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:19,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:19,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2024-10-31 22:15:19,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 132 transitions, 285 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2024-10-31 22:15:19,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:19,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2024-10-31 22:15:19,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:19,659 INFO L124 PetriNetUnfolderBase]: 91/795 cut-off events. [2024-10-31 22:15:19,660 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:15:19,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 795 events. 91/795 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4698 event pairs, 30 based on Foata normal form. 0/726 useless extension candidates. Maximal degree in co-relation 962. Up to 125 conditions per place. [2024-10-31 22:15:19,667 INFO L140 encePairwiseOnDemand]: 138/147 looper letters, 30 selfloop transitions, 6 changer transitions 0/145 dead transitions. [2024-10-31 22:15:19,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 145 transitions, 386 flow [2024-10-31 22:15:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2024-10-31 22:15:19,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8435374149659864 [2024-10-31 22:15:19,670 INFO L175 Difference]: Start difference. First operand has 140 places, 132 transitions, 285 flow. Second operand 3 states and 372 transitions. [2024-10-31 22:15:19,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 145 transitions, 386 flow [2024-10-31 22:15:19,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 376 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:15:19,676 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 313 flow [2024-10-31 22:15:19,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2024-10-31 22:15:19,680 INFO L277 CegarLoopForPetriNet]: 137 programPoint places, 0 predicate places. [2024-10-31 22:15:19,681 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 313 flow [2024-10-31 22:15:19,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2024-10-31 22:15:19,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:19,681 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:19,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:15:19,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 22:15:19,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1800401091, now seen corresponding path program 1 times [2024-10-31 22:15:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:19,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687926144] [2024-10-31 22:15:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:19,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:19,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687926144] [2024-10-31 22:15:19,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687926144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:19,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309321592] [2024-10-31 22:15:19,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:19,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:19,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 147 [2024-10-31 22:15:19,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2024-10-31 22:15:19,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:19,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 147 [2024-10-31 22:15:19,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:19,951 INFO L124 PetriNetUnfolderBase]: 94/797 cut-off events. [2024-10-31 22:15:19,951 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-31 22:15:19,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 797 events. 94/797 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4756 event pairs, 60 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1062. Up to 189 conditions per place. [2024-10-31 22:15:19,956 INFO L140 encePairwiseOnDemand]: 142/147 looper letters, 27 selfloop transitions, 4 changer transitions 0/141 dead transitions. [2024-10-31 22:15:19,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 141 transitions, 393 flow [2024-10-31 22:15:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2024-10-31 22:15:19,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8344671201814059 [2024-10-31 22:15:19,958 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 313 flow. Second operand 3 states and 368 transitions. [2024-10-31 22:15:19,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 141 transitions, 393 flow [2024-10-31 22:15:19,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 141 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:19,964 INFO L231 Difference]: Finished difference. Result has 139 places, 137 transitions, 333 flow [2024-10-31 22:15:19,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=139, PETRI_TRANSITIONS=137} [2024-10-31 22:15:19,965 INFO L277 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2024-10-31 22:15:19,966 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 137 transitions, 333 flow [2024-10-31 22:15:19,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2024-10-31 22:15:19,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:19,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:19,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:15:19,968 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 22:15:19,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:19,971 INFO L85 PathProgramCache]: Analyzing trace with hash 660933758, now seen corresponding path program 1 times [2024-10-31 22:15:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276144047] [2024-10-31 22:15:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:20,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:15:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:20,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:15:20,070 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:15:20,072 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-10-31 22:15:20,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-10-31 22:15:20,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-10-31 22:15:20,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-10-31 22:15:20,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-10-31 22:15:20,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-10-31 22:15:20,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-10-31 22:15:20,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-10-31 22:15:20,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-10-31 22:15:20,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-10-31 22:15:20,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-10-31 22:15:20,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-10-31 22:15:20,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:15:20,079 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:15:20,082 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:15:20,082 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:15:20,132 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:15:20,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 196 transitions, 408 flow [2024-10-31 22:15:20,186 INFO L124 PetriNetUnfolderBase]: 34/342 cut-off events. [2024-10-31 22:15:20,187 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:15:20,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 342 events. 34/342 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1167 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 208. Up to 8 conditions per place. [2024-10-31 22:15:20,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 196 transitions, 408 flow [2024-10-31 22:15:20,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 196 transitions, 408 flow [2024-10-31 22:15:20,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:20,199 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41aebb83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:20,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-31 22:15:20,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:20,206 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-10-31 22:15:20,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:20,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:20,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:20,207 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:20,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash 149931292, now seen corresponding path program 1 times [2024-10-31 22:15:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720347492] [2024-10-31 22:15:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:20,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:20,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:20,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720347492] [2024-10-31 22:15:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720347492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:20,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666518804] [2024-10-31 22:15:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:20,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:20,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 196 [2024-10-31 22:15:20,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 196 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2024-10-31 22:15:20,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:20,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 196 [2024-10-31 22:15:20,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:21,173 INFO L124 PetriNetUnfolderBase]: 788/4305 cut-off events. [2024-10-31 22:15:21,173 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-31 22:15:21,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5658 conditions, 4305 events. 788/4305 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 41159 event pairs, 348 based on Foata normal form. 749/4668 useless extension candidates. Maximal degree in co-relation 721. Up to 1303 conditions per place. [2024-10-31 22:15:21,205 INFO L140 encePairwiseOnDemand]: 175/196 looper letters, 31 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2024-10-31 22:15:21,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 183 transitions, 448 flow [2024-10-31 22:15:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2024-10-31 22:15:21,208 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8707482993197279 [2024-10-31 22:15:21,208 INFO L175 Difference]: Start difference. First operand has 181 places, 196 transitions, 408 flow. Second operand 3 states and 512 transitions. [2024-10-31 22:15:21,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 183 transitions, 448 flow [2024-10-31 22:15:21,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 183 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:21,213 INFO L231 Difference]: Finished difference. Result has 182 places, 177 transitions, 380 flow [2024-10-31 22:15:21,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=182, PETRI_TRANSITIONS=177} [2024-10-31 22:15:21,216 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, 1 predicate places. [2024-10-31 22:15:21,217 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 177 transitions, 380 flow [2024-10-31 22:15:21,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2024-10-31 22:15:21,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:21,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:21,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:15:21,218 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:21,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:21,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1177923550, now seen corresponding path program 1 times [2024-10-31 22:15:21,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:21,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213460007] [2024-10-31 22:15:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:21,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:21,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:21,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213460007] [2024-10-31 22:15:21,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213460007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:21,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:21,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:15:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940554268] [2024-10-31 22:15:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:21,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:21,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:21,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:15:21,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 196 [2024-10-31 22:15:21,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 177 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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) [2024-10-31 22:15:21,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:21,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 196 [2024-10-31 22:15:21,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:23,039 INFO L124 PetriNetUnfolderBase]: 1718/5680 cut-off events. [2024-10-31 22:15:23,039 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-10-31 22:15:23,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8692 conditions, 5680 events. 1718/5680 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 54009 event pairs, 222 based on Foata normal form. 0/5288 useless extension candidates. Maximal degree in co-relation 1233. Up to 2015 conditions per place. [2024-10-31 22:15:23,077 INFO L140 encePairwiseOnDemand]: 190/196 looper letters, 80 selfloop transitions, 6 changer transitions 0/224 dead transitions. [2024-10-31 22:15:23,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 224 transitions, 646 flow [2024-10-31 22:15:23,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:15:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:15:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 920 transitions. [2024-10-31 22:15:23,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.782312925170068 [2024-10-31 22:15:23,080 INFO L175 Difference]: Start difference. First operand has 182 places, 177 transitions, 380 flow. Second operand 6 states and 920 transitions. [2024-10-31 22:15:23,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 224 transitions, 646 flow [2024-10-31 22:15:23,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 224 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:23,085 INFO L231 Difference]: Finished difference. Result has 185 places, 176 transitions, 388 flow [2024-10-31 22:15:23,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=185, PETRI_TRANSITIONS=176} [2024-10-31 22:15:23,087 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, 4 predicate places. [2024-10-31 22:15:23,087 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 176 transitions, 388 flow [2024-10-31 22:15:23,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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) [2024-10-31 22:15:23,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:23,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:23,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:15:23,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:23,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1892525488, now seen corresponding path program 1 times [2024-10-31 22:15:23,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844014928] [2024-10-31 22:15:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844014928] [2024-10-31 22:15:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844014928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:23,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:23,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680593973] [2024-10-31 22:15:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:23,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:23,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 196 [2024-10-31 22:15:23,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 176 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2024-10-31 22:15:23,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:23,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 196 [2024-10-31 22:15:23,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:25,819 INFO L124 PetriNetUnfolderBase]: 3893/14603 cut-off events. [2024-10-31 22:15:25,820 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-10-31 22:15:25,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21154 conditions, 14603 events. 3893/14603 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 164191 event pairs, 1530 based on Foata normal form. 0/13062 useless extension candidates. Maximal degree in co-relation 20044. Up to 3516 conditions per place. [2024-10-31 22:15:25,933 INFO L140 encePairwiseOnDemand]: 177/196 looper letters, 58 selfloop transitions, 14 changer transitions 0/209 dead transitions. [2024-10-31 22:15:25,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 209 transitions, 609 flow [2024-10-31 22:15:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2024-10-31 22:15:25,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8350340136054422 [2024-10-31 22:15:25,936 INFO L175 Difference]: Start difference. First operand has 185 places, 176 transitions, 388 flow. Second operand 3 states and 491 transitions. [2024-10-31 22:15:25,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 209 transitions, 609 flow [2024-10-31 22:15:25,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 209 transitions, 597 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:15:25,944 INFO L231 Difference]: Finished difference. Result has 184 places, 190 transitions, 498 flow [2024-10-31 22:15:25,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=184, PETRI_TRANSITIONS=190} [2024-10-31 22:15:25,947 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, 3 predicate places. [2024-10-31 22:15:25,947 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 190 transitions, 498 flow [2024-10-31 22:15:25,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2024-10-31 22:15:25,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:25,948 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:25,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:15:25,949 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:25,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:25,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1628660468, now seen corresponding path program 1 times [2024-10-31 22:15:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:25,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338269985] [2024-10-31 22:15:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:25,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:26,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338269985] [2024-10-31 22:15:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338269985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463745996] [2024-10-31 22:15:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:26,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:26,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 196 [2024-10-31 22:15:26,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 190 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2024-10-31 22:15:26,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:26,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 196 [2024-10-31 22:15:26,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:28,920 INFO L124 PetriNetUnfolderBase]: 4020/16456 cut-off events. [2024-10-31 22:15:28,920 INFO L125 PetriNetUnfolderBase]: For 4426/4601 co-relation queries the response was YES. [2024-10-31 22:15:28,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27144 conditions, 16456 events. 4020/16456 cut-off events. For 4426/4601 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 193973 event pairs, 2411 based on Foata normal form. 46/14958 useless extension candidates. Maximal degree in co-relation 13739. Up to 5498 conditions per place. [2024-10-31 22:15:29,050 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 52 selfloop transitions, 14 changer transitions 0/214 dead transitions. [2024-10-31 22:15:29,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 214 transitions, 716 flow [2024-10-31 22:15:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2024-10-31 22:15:29,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8248299319727891 [2024-10-31 22:15:29,053 INFO L175 Difference]: Start difference. First operand has 184 places, 190 transitions, 498 flow. Second operand 3 states and 485 transitions. [2024-10-31 22:15:29,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 214 transitions, 716 flow [2024-10-31 22:15:29,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 214 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:29,069 INFO L231 Difference]: Finished difference. Result has 186 places, 202 transitions, 596 flow [2024-10-31 22:15:29,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=186, PETRI_TRANSITIONS=202} [2024-10-31 22:15:29,070 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, 5 predicate places. [2024-10-31 22:15:29,070 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 202 transitions, 596 flow [2024-10-31 22:15:29,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2024-10-31 22:15:29,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:29,071 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:29,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:15:29,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:29,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1927464448, now seen corresponding path program 1 times [2024-10-31 22:15:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581753022] [2024-10-31 22:15:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:29,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581753022] [2024-10-31 22:15:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581753022] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:15:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498373731] [2024-10-31 22:15:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:29,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:15:29,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:29,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:15:29,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:15:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:29,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:15:29,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:15:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:29,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:15:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498373731] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:15:29,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:15:29,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-31 22:15:29,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578410552] [2024-10-31 22:15:29,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:15:29,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:15:29,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:29,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:15:29,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:15:29,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 196 [2024-10-31 22:15:29,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 202 transitions, 596 flow. Second operand has 10 states, 10 states have (on average 150.5) internal successors, (1505), 10 states have internal predecessors, (1505), 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) [2024-10-31 22:15:29,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:29,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 196 [2024-10-31 22:15:29,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:30,487 INFO L124 PetriNetUnfolderBase]: 675/2887 cut-off events. [2024-10-31 22:15:30,487 INFO L125 PetriNetUnfolderBase]: For 266/283 co-relation queries the response was YES. [2024-10-31 22:15:30,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 2887 events. 675/2887 cut-off events. For 266/283 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 24860 event pairs, 56 based on Foata normal form. 106/2870 useless extension candidates. Maximal degree in co-relation 2700. Up to 458 conditions per place. [2024-10-31 22:15:30,504 INFO L140 encePairwiseOnDemand]: 191/196 looper letters, 72 selfloop transitions, 7 changer transitions 0/209 dead transitions. [2024-10-31 22:15:30,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 209 transitions, 722 flow [2024-10-31 22:15:30,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:15:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:15:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1413 transitions. [2024-10-31 22:15:30,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2024-10-31 22:15:30,509 INFO L175 Difference]: Start difference. First operand has 186 places, 202 transitions, 596 flow. Second operand 9 states and 1413 transitions. [2024-10-31 22:15:30,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 209 transitions, 722 flow [2024-10-31 22:15:30,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 209 transitions, 702 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:30,516 INFO L231 Difference]: Finished difference. Result has 149 places, 153 transitions, 446 flow [2024-10-31 22:15:30,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=446, PETRI_PLACES=149, PETRI_TRANSITIONS=153} [2024-10-31 22:15:30,517 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -32 predicate places. [2024-10-31 22:15:30,517 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 153 transitions, 446 flow [2024-10-31 22:15:30,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.5) internal successors, (1505), 10 states have internal predecessors, (1505), 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) [2024-10-31 22:15:30,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:30,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:30,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:15:30,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae3716eb-a7d7-462c-8233-8362531fdaba/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:15:30,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:30,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:30,720 INFO L85 PathProgramCache]: Analyzing trace with hash 573959911, now seen corresponding path program 1 times [2024-10-31 22:15:30,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:30,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099614325] [2024-10-31 22:15:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:30,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 22:15:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:30,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099614325] [2024-10-31 22:15:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099614325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:30,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306737070] [2024-10-31 22:15:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:30,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:30,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:30,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 196 [2024-10-31 22:15:30,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 153 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:30,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:30,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 196 [2024-10-31 22:15:30,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:31,012 INFO L124 PetriNetUnfolderBase]: 260/1294 cut-off events. [2024-10-31 22:15:31,013 INFO L125 PetriNetUnfolderBase]: For 451/472 co-relation queries the response was YES. [2024-10-31 22:15:31,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 1294 events. 260/1294 cut-off events. For 451/472 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8678 event pairs, 132 based on Foata normal form. 7/1209 useless extension candidates. Maximal degree in co-relation 2262. Up to 459 conditions per place. [2024-10-31 22:15:31,020 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 42 selfloop transitions, 12 changer transitions 0/167 dead transitions. [2024-10-31 22:15:31,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 167 transitions, 598 flow [2024-10-31 22:15:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2024-10-31 22:15:31,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8010204081632653 [2024-10-31 22:15:31,022 INFO L175 Difference]: Start difference. First operand has 149 places, 153 transitions, 446 flow. Second operand 3 states and 471 transitions. [2024-10-31 22:15:31,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 167 transitions, 598 flow [2024-10-31 22:15:31,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 167 transitions, 583 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-31 22:15:31,026 INFO L231 Difference]: Finished difference. Result has 148 places, 161 transitions, 529 flow [2024-10-31 22:15:31,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=529, PETRI_PLACES=148, PETRI_TRANSITIONS=161} [2024-10-31 22:15:31,027 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -33 predicate places. [2024-10-31 22:15:31,027 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 161 transitions, 529 flow [2024-10-31 22:15:31,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:31,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:31,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:31,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:15:31,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:31,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1794930462, now seen corresponding path program 1 times [2024-10-31 22:15:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191776109] [2024-10-31 22:15:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:31,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:31,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:31,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191776109] [2024-10-31 22:15:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191776109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:31,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:31,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:31,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637881639] [2024-10-31 22:15:31,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:31,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:31,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:31,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:31,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 196 [2024-10-31 22:15:31,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 161 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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) [2024-10-31 22:15:31,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:31,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 196 [2024-10-31 22:15:31,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:31,439 INFO L124 PetriNetUnfolderBase]: 291/1366 cut-off events. [2024-10-31 22:15:31,439 INFO L125 PetriNetUnfolderBase]: For 1163/1198 co-relation queries the response was YES. [2024-10-31 22:15:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 1366 events. 291/1366 cut-off events. For 1163/1198 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9336 event pairs, 134 based on Foata normal form. 9/1299 useless extension candidates. Maximal degree in co-relation 2719. Up to 501 conditions per place. [2024-10-31 22:15:31,451 INFO L140 encePairwiseOnDemand]: 188/196 looper letters, 49 selfloop transitions, 12 changer transitions 0/176 dead transitions. [2024-10-31 22:15:31,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 176 transitions, 718 flow [2024-10-31 22:15:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2024-10-31 22:15:31,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8027210884353742 [2024-10-31 22:15:31,453 INFO L175 Difference]: Start difference. First operand has 148 places, 161 transitions, 529 flow. Second operand 3 states and 472 transitions. [2024-10-31 22:15:31,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 176 transitions, 718 flow [2024-10-31 22:15:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 176 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:31,460 INFO L231 Difference]: Finished difference. Result has 150 places, 169 transitions, 615 flow [2024-10-31 22:15:31,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=150, PETRI_TRANSITIONS=169} [2024-10-31 22:15:31,461 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -31 predicate places. [2024-10-31 22:15:31,461 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 169 transitions, 615 flow [2024-10-31 22:15:31,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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) [2024-10-31 22:15:31,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:31,462 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:31,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:15:31,462 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 22:15:31,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:31,463 INFO L85 PathProgramCache]: Analyzing trace with hash 508953308, now seen corresponding path program 1 times [2024-10-31 22:15:31,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744714802] [2024-10-31 22:15:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:31,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:15:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:31,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:15:31,531 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:15:31,531 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-31 22:15:31,531 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-31 22:15:31,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-31 22:15:31,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-31 22:15:31,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-31 22:15:31,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-31 22:15:31,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-31 22:15:31,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-31 22:15:31,534 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-31 22:15:31,534 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-31 22:15:31,535 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-31 22:15:31,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-31 22:15:31,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-31 22:15:31,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-31 22:15:31,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-31 22:15:31,536 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-31 22:15:31,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:15:31,537 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:31,537 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:15:31,538 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:15:31,573 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:15:31,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 245 transitions, 517 flow [2024-10-31 22:15:31,636 INFO L124 PetriNetUnfolderBase]: 54/523 cut-off events. [2024-10-31 22:15:31,637 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-31 22:15:31,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 523 events. 54/523 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1974 event pairs, 1 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 350. Up to 16 conditions per place. [2024-10-31 22:15:31,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 245 transitions, 517 flow [2024-10-31 22:15:31,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 245 transitions, 517 flow [2024-10-31 22:15:31,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:31,646 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41aebb83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:31,646 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-31 22:15:31,651 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:31,651 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-10-31 22:15:31,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:31,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:31,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:31,652 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-31 22:15:31,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash -625575524, now seen corresponding path program 1 times [2024-10-31 22:15:31,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:31,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079432917] [2024-10-31 22:15:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:31,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:31,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079432917] [2024-10-31 22:15:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079432917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202919199] [2024-10-31 22:15:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:31,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:31,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 245 [2024-10-31 22:15:31,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 245 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2024-10-31 22:15:31,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:31,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 245 [2024-10-31 22:15:31,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:36,679 INFO L124 PetriNetUnfolderBase]: 8948/35254 cut-off events. [2024-10-31 22:15:36,679 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-10-31 22:15:36,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48492 conditions, 35254 events. 8948/35254 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 458910 event pairs, 5659 based on Foata normal form. 7668/39699 useless extension candidates. Maximal degree in co-relation 6249. Up to 12802 conditions per place. [2024-10-31 22:15:37,061 INFO L140 encePairwiseOnDemand]: 218/245 looper letters, 39 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2024-10-31 22:15:37,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 226 transitions, 561 flow [2024-10-31 22:15:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2024-10-31 22:15:37,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8585034013605443 [2024-10-31 22:15:37,065 INFO L175 Difference]: Start difference. First operand has 225 places, 245 transitions, 517 flow. Second operand 3 states and 631 transitions. [2024-10-31 22:15:37,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 226 transitions, 561 flow [2024-10-31 22:15:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 226 transitions, 561 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:37,072 INFO L231 Difference]: Finished difference. Result has 226 places, 220 transitions, 477 flow [2024-10-31 22:15:37,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=226, PETRI_TRANSITIONS=220} [2024-10-31 22:15:37,074 INFO L277 CegarLoopForPetriNet]: 225 programPoint places, 1 predicate places. [2024-10-31 22:15:37,074 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 220 transitions, 477 flow [2024-10-31 22:15:37,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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) [2024-10-31 22:15:37,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:37,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:37,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:15:37,075 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-31 22:15:37,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash 884343618, now seen corresponding path program 1 times [2024-10-31 22:15:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:37,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474198686] [2024-10-31 22:15:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:37,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474198686] [2024-10-31 22:15:37,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474198686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:37,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:15:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391738265] [2024-10-31 22:15:37,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:37,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:15:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:15:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:15:37,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2024-10-31 22:15:37,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 220 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 175.5) internal successors, (1053), 6 states have internal predecessors, (1053), 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) [2024-10-31 22:15:37,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:37,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2024-10-31 22:15:37,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand