./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/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_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/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_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/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 d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:42,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:42,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:01:42,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:42,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:42,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:42,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:42,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:42,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:42,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:42,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:42,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:42,902 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:42,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:42,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:42,903 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:42,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:42,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:42,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:42,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:42,908 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:42,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:42,909 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:01:42,909 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:42,910 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:42,910 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:42,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:42,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:42,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:42,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:42,912 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:42,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:42,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:42,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:42,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:42,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:42,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:42,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:42,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:42,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:42,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:42,917 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_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d [2024-10-31 22:01:43,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:43,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:43,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:43,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:43,276 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:43,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i Unable to find full path for "g++" [2024-10-31 22:01:45,517 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:45,782 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:45,783 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-10-31 22:01:45,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/data/257ed17bf/90202a3b2a7147c9b498c6852223e838/FLAG9363b979c [2024-10-31 22:01:45,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/data/257ed17bf/90202a3b2a7147c9b498c6852223e838 [2024-10-31 22:01:45,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:45,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:45,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:45,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:45,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:45,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:45" (1/1) ... [2024-10-31 22:01:45,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f45039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:45, skipping insertion in model container [2024-10-31 22:01:45,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:45" (1/1) ... [2024-10-31 22:01:45,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:46,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:46,459 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:46,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:46,592 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:46,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46 WrapperNode [2024-10-31 22:01:46,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:46,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:46,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:46,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:46,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,652 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-10-31 22:01:46,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:46,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:46,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:46,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:46,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:46,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:46,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:46,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:46,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (1/1) ... [2024-10-31 22:01:46,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:46,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:46,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:46,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76454a14-b5e0-4ee2-9a14-e7b11ec6e7c8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-31 22:01:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-31 22:01:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:01:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:01:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:01:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:01:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:01:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:46,786 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 22:01:46,931 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:46,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:47,214 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:01:47,214 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:47,253 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:47,253 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:01:47,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:47 BoogieIcfgContainer [2024-10-31 22:01:47,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:47,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:47,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:47,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:47,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:45" (1/3) ... [2024-10-31 22:01:47,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bf3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:47, skipping insertion in model container [2024-10-31 22:01:47,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:46" (2/3) ... [2024-10-31 22:01:47,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bf3d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:47, skipping insertion in model container [2024-10-31 22:01:47,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:47" (3/3) ... [2024-10-31 22:01:47,270 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2024-10-31 22:01:47,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:47,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-31 22:01:47,292 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:01:47,382 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:01:47,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 108 transitions, 224 flow [2024-10-31 22:01:47,482 INFO L124 PetriNetUnfolderBase]: 7/116 cut-off events. [2024-10-31 22:01:47,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:47,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 116 events. 7/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 176 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2024-10-31 22:01:47,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 108 transitions, 224 flow [2024-10-31 22:01:47,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 107 transitions, 221 flow [2024-10-31 22:01:47,509 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:47,517 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;@57c964b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:47,517 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-31 22:01:47,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:47,532 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-31 22:01:47,532 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:47,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:47,535 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] [2024-10-31 22:01:47,536 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:47,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash 672884579, now seen corresponding path program 1 times [2024-10-31 22:01:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:47,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142049088] [2024-10-31 22:01:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:47,857 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 22:01:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142049088] [2024-10-31 22:01:47,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142049088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:47,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:47,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:47,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919347401] [2024-10-31 22:01:47,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:47,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:47,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:47,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2024-10-31 22:01:47,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 22:01:47,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:47,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2024-10-31 22:01:47,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:48,148 INFO L124 PetriNetUnfolderBase]: 52/358 cut-off events. [2024-10-31 22:01:48,152 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:01:48,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 358 events. 52/358 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1427 event pairs, 13 based on Foata normal form. 86/390 useless extension candidates. Maximal degree in co-relation 450. Up to 70 conditions per place. [2024-10-31 22:01:48,159 INFO L140 encePairwiseOnDemand]: 95/108 looper letters, 16 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2024-10-31 22:01:48,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 246 flow [2024-10-31 22:01:48,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2024-10-31 22:01:48,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2024-10-31 22:01:48,177 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 221 flow. Second operand 3 states and 297 transitions. [2024-10-31 22:01:48,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 246 flow [2024-10-31 22:01:48,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:48,192 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 216 flow [2024-10-31 22:01:48,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2024-10-31 22:01:48,199 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -10 predicate places. [2024-10-31 22:01:48,200 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 216 flow [2024-10-31 22:01:48,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 22:01:48,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:48,201 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] [2024-10-31 22:01:48,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:48,203 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:48,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1897970203, now seen corresponding path program 1 times [2024-10-31 22:01:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:48,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225463238] [2024-10-31 22:01:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:48,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:48,380 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 22:01:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225463238] [2024-10-31 22:01:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225463238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:48,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:48,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561197813] [2024-10-31 22:01:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:48,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:48,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:48,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2024-10-31 22:01:48,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 22:01:48,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:48,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2024-10-31 22:01:48,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:48,589 INFO L124 PetriNetUnfolderBase]: 87/610 cut-off events. [2024-10-31 22:01:48,590 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-31 22:01:48,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 610 events. 87/610 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3282 event pairs, 17 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 846. Up to 101 conditions per place. [2024-10-31 22:01:48,603 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 16 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2024-10-31 22:01:48,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 273 flow [2024-10-31 22:01:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2024-10-31 22:01:48,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8734567901234568 [2024-10-31 22:01:48,606 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 216 flow. Second operand 3 states and 283 transitions. [2024-10-31 22:01:48,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 273 flow [2024-10-31 22:01:48,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:48,610 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 236 flow [2024-10-31 22:01:48,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-10-31 22:01:48,611 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -9 predicate places. [2024-10-31 22:01:48,612 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 236 flow [2024-10-31 22:01:48,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 22:01:48,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:48,613 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-31 22:01:48,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:01:48,613 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-31 22:01:48,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash 696979939, now seen corresponding path program 1 times [2024-10-31 22:01:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:48,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009610473] [2024-10-31 22:01:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:48,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:48,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:01:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:48,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:01:48,708 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:01:48,710 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-31 22:01:48,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-31 22:01:48,713 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-31 22:01:48,713 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-31 22:01:48,714 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-31 22:01:48,714 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-31 22:01:48,715 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-31 22:01:48,715 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-31 22:01:48,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-31 22:01:48,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-31 22:01:48,716 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-31 22:01:48,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 22 remaining) [2024-10-31 22:01:48,717 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-31 22:01:48,718 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-31 22:01:48,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-31 22:01:48,719 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-31 22:01:48,720 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-31 22:01:48,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-31 22:01:48,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-31 22:01:48,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-31 22:01:48,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-31 22:01:48,722 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-31 22:01:48,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:01:48,723 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-31 22:01:48,729 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:01:48,729 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:01:48,793 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:01:48,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 178 transitions, 376 flow [2024-10-31 22:01:48,833 INFO L124 PetriNetUnfolderBase]: 9/172 cut-off events. [2024-10-31 22:01:48,833 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:01:48,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 172 events. 9/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 179. Up to 6 conditions per place. [2024-10-31 22:01:48,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 178 transitions, 376 flow [2024-10-31 22:01:48,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 152 transitions, 317 flow [2024-10-31 22:01:48,843 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:48,847 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;@57c964b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:48,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-10-31 22:01:48,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:48,856 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2024-10-31 22:01:48,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:48,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:48,857 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] [2024-10-31 22:01:48,859 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:01:48,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1707766232, now seen corresponding path program 1 times [2024-10-31 22:01:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266154547] [2024-10-31 22:01:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:48,953 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 22:01:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266154547] [2024-10-31 22:01:48,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266154547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:48,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:48,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330560477] [2024-10-31 22:01:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:48,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:49,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 178 [2024-10-31 22:01:49,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 152 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 22:01:49,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:49,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 178 [2024-10-31 22:01:49,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:49,728 INFO L124 PetriNetUnfolderBase]: 881/3568 cut-off events. [2024-10-31 22:01:49,729 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-10-31 22:01:49,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 3568 events. 881/3568 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 30852 event pairs, 288 based on Foata normal form. 795/3720 useless extension candidates. Maximal degree in co-relation 5060. Up to 813 conditions per place. [2024-10-31 22:01:49,782 INFO L140 encePairwiseOnDemand]: 159/178 looper letters, 28 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2024-10-31 22:01:49,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 149 transitions, 391 flow [2024-10-31 22:01:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2024-10-31 22:01:49,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8782771535580525 [2024-10-31 22:01:49,786 INFO L175 Difference]: Start difference. First operand has 153 places, 152 transitions, 317 flow. Second operand 3 states and 469 transitions. [2024-10-31 22:01:49,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 149 transitions, 391 flow [2024-10-31 22:01:49,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 149 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:01:49,797 INFO L231 Difference]: Finished difference. Result has 141 places, 141 transitions, 348 flow [2024-10-31 22:01:49,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=141, PETRI_TRANSITIONS=141} [2024-10-31 22:01:49,798 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, -12 predicate places. [2024-10-31 22:01:49,798 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 141 transitions, 348 flow [2024-10-31 22:01:49,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 22:01:49,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:49,799 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] [2024-10-31 22:01:49,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:01:49,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:01:49,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash -485823702, now seen corresponding path program 1 times [2024-10-31 22:01:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:49,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330402743] [2024-10-31 22:01:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:49,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:49,876 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 22:01:49,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330402743] [2024-10-31 22:01:49,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330402743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:49,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:49,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:49,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933640377] [2024-10-31 22:01:49,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:49,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:49,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 178 [2024-10-31 22:01:49,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 141 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 22:01:49,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:49,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 178 [2024-10-31 22:01:49,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:52,030 INFO L124 PetriNetUnfolderBase]: 2733/11119 cut-off events. [2024-10-31 22:01:52,031 INFO L125 PetriNetUnfolderBase]: For 718/721 co-relation queries the response was YES. [2024-10-31 22:01:52,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16972 conditions, 11119 events. 2733/11119 cut-off events. For 718/721 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 126961 event pairs, 711 based on Foata normal form. 0/9269 useless extension candidates. Maximal degree in co-relation 16939. Up to 2139 conditions per place. [2024-10-31 22:01:52,183 INFO L140 encePairwiseOnDemand]: 167/178 looper letters, 28 selfloop transitions, 8 changer transitions 0/157 dead transitions. [2024-10-31 22:01:52,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 157 transitions, 460 flow [2024-10-31 22:01:52,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:52,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2024-10-31 22:01:52,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.848314606741573 [2024-10-31 22:01:52,186 INFO L175 Difference]: Start difference. First operand has 141 places, 141 transitions, 348 flow. Second operand 3 states and 453 transitions. [2024-10-31 22:01:52,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 157 transitions, 460 flow [2024-10-31 22:01:52,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 157 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:52,200 INFO L231 Difference]: Finished difference. Result has 143 places, 149 transitions, 402 flow [2024-10-31 22:01:52,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=143, PETRI_TRANSITIONS=149} [2024-10-31 22:01:52,202 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, -10 predicate places. [2024-10-31 22:01:52,203 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 149 transitions, 402 flow [2024-10-31 22:01:52,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 22:01:52,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:52,204 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 22:01:52,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:01:52,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:01:52,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -624411761, now seen corresponding path program 1 times [2024-10-31 22:01:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:52,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755631013] [2024-10-31 22:01:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:52,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:52,340 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 22:01:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755631013] [2024-10-31 22:01:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755631013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:52,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:52,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297454281] [2024-10-31 22:01:52,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:52,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:52,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 178 [2024-10-31 22:01:52,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 149 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:52,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:52,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 178 [2024-10-31 22:01:52,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:01:54,515 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([489] L694-->L694-1: Formula: (= |v_#race~a~0_1| 0) InVars {} OutVars{#race~a~0=|v_#race~a~0_1|} AuxVars[] AssignedVars[#race~a~0][50], [130#L695-5true, 172#true, 44#L708-2true, Black: 180#true, 190#true, 187#(= |#race~b~0| 0), 176#true, Black: 185#true, 118#L694-1true, 174#true, 94#L717-4true]) [2024-10-31 22:01:54,515 INFO L294 olderBase$Statistics]: this new event has 99 ancestors and is cut-off event [2024-10-31 22:01:54,515 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2024-10-31 22:01:54,515 INFO L297 olderBase$Statistics]: existing Event has 67 ancestors and is cut-off event [2024-10-31 22:01:54,516 INFO L297 olderBase$Statistics]: existing Event has 99 ancestors and is cut-off event [2024-10-31 22:01:54,899 INFO L124 PetriNetUnfolderBase]: 3513/14476 cut-off events. [2024-10-31 22:01:54,900 INFO L125 PetriNetUnfolderBase]: For 912/917 co-relation queries the response was YES. [2024-10-31 22:01:55,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22818 conditions, 14476 events. 3513/14476 cut-off events. For 912/917 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 173848 event pairs, 1504 based on Foata normal form. 0/12195 useless extension candidates. Maximal degree in co-relation 22784. Up to 3347 conditions per place. [2024-10-31 22:01:55,192 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 21 selfloop transitions, 5 changer transitions 0/158 dead transitions. [2024-10-31 22:01:55,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 158 transitions, 477 flow [2024-10-31 22:01:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:01:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:01:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2024-10-31 22:01:55,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8595505617977528 [2024-10-31 22:01:55,194 INFO L175 Difference]: Start difference. First operand has 143 places, 149 transitions, 402 flow. Second operand 3 states and 459 transitions. [2024-10-31 22:01:55,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 158 transitions, 477 flow [2024-10-31 22:01:55,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 158 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:01:55,204 INFO L231 Difference]: Finished difference. Result has 145 places, 153 transitions, 424 flow [2024-10-31 22:01:55,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=145, PETRI_TRANSITIONS=153} [2024-10-31 22:01:55,207 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, -8 predicate places. [2024-10-31 22:01:55,207 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 153 transitions, 424 flow [2024-10-31 22:01:55,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:55,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:55,208 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-10-31 22:01:55,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:01:55,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:01:55,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1281657640, now seen corresponding path program 1 times [2024-10-31 22:01:55,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:55,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222626553] [2024-10-31 22:01:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:55,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:01:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:55,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:01:55,240 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:01:55,240 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-10-31 22:01:55,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2024-10-31 22:01:55,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2024-10-31 22:01:55,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2024-10-31 22:01:55,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2024-10-31 22:01:55,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2024-10-31 22:01:55,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2024-10-31 22:01:55,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (24 of 32 remaining) [2024-10-31 22:01:55,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2024-10-31 22:01:55,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2024-10-31 22:01:55,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2024-10-31 22:01:55,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 32 remaining) [2024-10-31 22:01:55,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2024-10-31 22:01:55,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2024-10-31 22:01:55,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2024-10-31 22:01:55,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2024-10-31 22:01:55,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2024-10-31 22:01:55,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2024-10-31 22:01:55,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2024-10-31 22:01:55,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2024-10-31 22:01:55,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2024-10-31 22:01:55,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2024-10-31 22:01:55,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2024-10-31 22:01:55,245 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2024-10-31 22:01:55,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2024-10-31 22:01:55,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2024-10-31 22:01:55,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2024-10-31 22:01:55,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2024-10-31 22:01:55,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2024-10-31 22:01:55,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2024-10-31 22:01:55,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2024-10-31 22:01:55,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2024-10-31 22:01:55,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:01:55,247 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 22:01:55,248 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:01:55,248 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:01:55,310 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:01:55,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 248 transitions, 532 flow [2024-10-31 22:01:55,351 INFO L124 PetriNetUnfolderBase]: 11/228 cut-off events. [2024-10-31 22:01:55,352 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:01:55,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 228 events. 11/228 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 575 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 239. Up to 8 conditions per place. [2024-10-31 22:01:55,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 248 transitions, 532 flow [2024-10-31 22:01:55,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 197 transitions, 415 flow [2024-10-31 22:01:55,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:55,364 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;@57c964b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:55,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-10-31 22:01:55,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:01:55,369 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-10-31 22:01:55,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:01:55,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:01:55,370 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] [2024-10-31 22:01:55,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-31 22:01:55,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1735086381, now seen corresponding path program 1 times [2024-10-31 22:01:55,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:55,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541635687] [2024-10-31 22:01:55,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:55,424 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 22:01:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:55,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541635687] [2024-10-31 22:01:55,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541635687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:55,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357706675] [2024-10-31 22:01:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:55,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:01:55,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:01:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:01:55,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 248 [2024-10-31 22:01:55,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 22:01:55,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:01:55,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 248 [2024-10-31 22:01:55,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:02:00,220 INFO L124 PetriNetUnfolderBase]: 10763/31503 cut-off events. [2024-10-31 22:02:00,220 INFO L125 PetriNetUnfolderBase]: For 2767/2767 co-relation queries the response was YES. [2024-10-31 22:02:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48086 conditions, 31503 events. 10763/31503 cut-off events. For 2767/2767 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 373569 event pairs, 3318 based on Foata normal form. 6558/32271 useless extension candidates. Maximal degree in co-relation 48053. Up to 8400 conditions per place. [2024-10-31 22:02:00,775 INFO L140 encePairwiseOnDemand]: 224/248 looper letters, 38 selfloop transitions, 11 changer transitions 0/197 dead transitions. [2024-10-31 22:02:00,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 197 transitions, 528 flow [2024-10-31 22:02:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:02:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:02:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2024-10-31 22:02:00,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8575268817204301 [2024-10-31 22:02:00,779 INFO L175 Difference]: Start difference. First operand has 199 places, 197 transitions, 415 flow. Second operand 3 states and 638 transitions. [2024-10-31 22:02:00,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 197 transitions, 528 flow [2024-10-31 22:02:00,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 197 transitions, 523 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-31 22:02:00,788 INFO L231 Difference]: Finished difference. Result has 184 places, 186 transitions, 464 flow [2024-10-31 22:02:00,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=184, PETRI_TRANSITIONS=186} [2024-10-31 22:02:00,790 INFO L277 CegarLoopForPetriNet]: 199 programPoint places, -15 predicate places. [2024-10-31 22:02:00,790 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 186 transitions, 464 flow [2024-10-31 22:02:00,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 22:02:00,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:02:00,792 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] [2024-10-31 22:02:00,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:02:00,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-31 22:02:00,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash 970729583, now seen corresponding path program 1 times [2024-10-31 22:02:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:00,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801927916] [2024-10-31 22:02:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:00,841 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 22:02:00,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:00,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801927916] [2024-10-31 22:02:00,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801927916] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:02:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145887398] [2024-10-31 22:02:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:00,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:02:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:02:00,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:02:00,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 248 [2024-10-31 22:02:00,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 186 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 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 22:02:00,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:02:00,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 248 [2024-10-31 22:02:00,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand