./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.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_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/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_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/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_467bfd15-6eb1-42a4-ab84-693e69cf396f/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 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:55:36,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:55:36,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 21:55:36,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:55:36,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:55:36,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:55:36,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:55:36,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:55:36,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:55:36,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:55:36,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:55:36,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:55:36,833 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:55:36,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:55:36,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:55:36,836 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:55:36,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:55:36,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:55:36,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:55:36,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:55:36,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:55:36,843 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:55:36,843 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 21:55:36,843 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:55:36,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:55:36,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:55:36,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:55:36,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:55:36,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:55:36,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:55:36,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:55:36,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:55:36,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:55:36,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:55:36,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:55:36,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:55:36,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:55:36,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:55:36,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:55:36,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:55:36,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:55:36,852 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_467bfd15-6eb1-42a4-ab84-693e69cf396f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd [2024-10-31 21:55:37,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:55:37,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:55:37,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:55:37,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:55:37,163 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:55:37,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i Unable to find full path for "g++" [2024-10-31 21:55:39,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:55:39,477 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:55:39,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2024-10-31 21:55:39,493 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/data/49f45ecd3/b7ab8b8eb2f141059979ba82505acf31/FLAG5a9ce6b1b [2024-10-31 21:55:39,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/data/49f45ecd3/b7ab8b8eb2f141059979ba82505acf31 [2024-10-31 21:55:39,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:55:39,511 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:55:39,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:55:39,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:55:39,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:55:39,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:55:39" (1/1) ... [2024-10-31 21:55:39,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf51f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:39, skipping insertion in model container [2024-10-31 21:55:39,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:55:39" (1/1) ... [2024-10-31 21:55:39,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:55:40,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:55:40,086 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:55:40,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:55:40,214 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:55:40,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40 WrapperNode [2024-10-31 21:55:40,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:55:40,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:55:40,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:55:40,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:55:40,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,274 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 88 [2024-10-31 21:55:40,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:55:40,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:55:40,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:55:40,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:55:40,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:55:40,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:55:40,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:55:40,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:55:40,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (1/1) ... [2024-10-31 21:55:40,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:55:40,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:55:40,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:55:40,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467bfd15-6eb1-42a4-ab84-693e69cf396f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:55:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 21:55:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 21:55:40,409 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 21:55:40,409 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 21:55:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:55:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 21:55:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 21:55:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:55:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:55:40,412 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 21:55:40,561 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:55:40,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:55:40,792 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 21:55:40,792 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:55:40,824 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:55:40,824 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 21:55:40,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:55:40 BoogieIcfgContainer [2024-10-31 21:55:40,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:55:40,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:55:40,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:55:40,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:55:40,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:55:39" (1/3) ... [2024-10-31 21:55:40,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b3941a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:55:40, skipping insertion in model container [2024-10-31 21:55:40,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:55:40" (2/3) ... [2024-10-31 21:55:40,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b3941a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:55:40, skipping insertion in model container [2024-10-31 21:55:40,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:55:40" (3/3) ... [2024-10-31 21:55:40,850 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2024-10-31 21:55:40,868 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:55:40,869 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-31 21:55:40,869 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 21:55:40,947 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:55:40,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 102 transitions, 208 flow [2024-10-31 21:55:41,111 INFO L124 PetriNetUnfolderBase]: 8/111 cut-off events. [2024-10-31 21:55:41,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:55:41,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 111 events. 8/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2024-10-31 21:55:41,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 102 transitions, 208 flow [2024-10-31 21:55:41,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 102 transitions, 208 flow [2024-10-31 21:55:41,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:55:41,150 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;@4514d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:55:41,150 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-31 21:55:41,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:55:41,166 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-10-31 21:55:41,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 21:55:41,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:41,167 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] [2024-10-31 21:55:41,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-31 21:55:41,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:41,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1044464488, now seen corresponding path program 1 times [2024-10-31 21:55:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962902963] [2024-10-31 21:55:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:41,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:55:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:41,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:55:41,406 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:55:41,407 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-31 21:55:41,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-31 21:55:41,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-31 21:55:41,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-31 21:55:41,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-31 21:55:41,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-31 21:55:41,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-31 21:55:41,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-31 21:55:41,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-31 21:55:41,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:55:41,411 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-31 21:55:41,414 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:55:41,414 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 21:55:41,491 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:55:41,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 167 transitions, 344 flow [2024-10-31 21:55:41,559 INFO L124 PetriNetUnfolderBase]: 15/187 cut-off events. [2024-10-31 21:55:41,560 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:55:41,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 312 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2024-10-31 21:55:41,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 167 transitions, 344 flow [2024-10-31 21:55:41,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 167 transitions, 344 flow [2024-10-31 21:55:41,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:55:41,576 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;@4514d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:55:41,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-31 21:55:41,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:55:41,610 INFO L124 PetriNetUnfolderBase]: 4/81 cut-off events. [2024-10-31 21:55:41,610 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 21:55:41,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:41,611 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] [2024-10-31 21:55:41,611 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-31 21:55:41,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1989405807, now seen corresponding path program 1 times [2024-10-31 21:55:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750239814] [2024-10-31 21:55:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:41,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:41,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:55:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:41,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:55:41,724 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:55:41,725 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-31 21:55:41,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-31 21:55:41,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-31 21:55:41,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-31 21:55:41,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-31 21:55:41,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-31 21:55:41,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-31 21:55:41,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-31 21:55:41,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-31 21:55:41,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-31 21:55:41,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-31 21:55:41,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-31 21:55:41,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-31 21:55:41,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:55:41,729 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-31 21:55:41,730 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:55:41,730 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 21:55:41,801 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:55:41,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 232 transitions, 482 flow [2024-10-31 21:55:41,917 INFO L124 PetriNetUnfolderBase]: 22/263 cut-off events. [2024-10-31 21:55:41,917 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 21:55:41,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 263 events. 22/263 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 657 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 203. Up to 8 conditions per place. [2024-10-31 21:55:41,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 232 transitions, 482 flow [2024-10-31 21:55:41,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 232 transitions, 482 flow [2024-10-31 21:55:41,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:55:41,929 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;@4514d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:55:41,929 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 21:55:41,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:55:41,952 INFO L124 PetriNetUnfolderBase]: 7/117 cut-off events. [2024-10-31 21:55:41,952 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 21:55:41,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:41,953 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 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 21:55:41,953 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-31 21:55:41,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 745213654, now seen corresponding path program 1 times [2024-10-31 21:55:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:41,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552658586] [2024-10-31 21:55:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:41,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:41,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:55:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:42,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:55:42,051 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:55:42,051 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-31 21:55:42,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-31 21:55:42,052 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-31 21:55:42,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-31 21:55:42,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-31 21:55:42,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-31 21:55:42,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-31 21:55:42,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-31 21:55:42,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-31 21:55:42,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-31 21:55:42,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-31 21:55:42,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-31 21:55:42,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-31 21:55:42,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-31 21:55:42,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-31 21:55:42,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-31 21:55:42,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-31 21:55:42,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:55:42,063 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-31 21:55:42,064 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:55:42,065 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-31 21:55:42,178 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:55:42,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 281 places, 297 transitions, 622 flow [2024-10-31 21:55:42,283 INFO L124 PetriNetUnfolderBase]: 29/339 cut-off events. [2024-10-31 21:55:42,283 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 21:55:42,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 339 events. 29/339 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1035 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 271. Up to 10 conditions per place. [2024-10-31 21:55:42,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 281 places, 297 transitions, 622 flow [2024-10-31 21:55:42,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 281 places, 297 transitions, 622 flow [2024-10-31 21:55:42,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:55:42,309 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;@4514d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:55:42,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-31 21:55:42,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:55:42,332 INFO L124 PetriNetUnfolderBase]: 10/142 cut-off events. [2024-10-31 21:55:42,333 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-31 21:55:42,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:42,333 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] [2024-10-31 21:55:42,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-31 21:55:42,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:42,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1028094242, now seen corresponding path program 1 times [2024-10-31 21:55:42,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:42,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116982014] [2024-10-31 21:55:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:43,255 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 21:55:43,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:43,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116982014] [2024-10-31 21:55:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116982014] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:43,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:55:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:55:43,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981654027] [2024-10-31 21:55:43,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:43,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:55:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:55:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:55:43,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 297 [2024-10-31 21:55:43,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 297 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 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 21:55:43,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:55:43,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 297 [2024-10-31 21:55:43,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:55:46,277 INFO L124 PetriNetUnfolderBase]: 1211/7401 cut-off events. [2024-10-31 21:55:46,277 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-10-31 21:55:46,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 7401 events. 1211/7401 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 79862 event pairs, 447 based on Foata normal form. 2317/8788 useless extension candidates. Maximal degree in co-relation 2824. Up to 689 conditions per place. [2024-10-31 21:55:46,544 INFO L140 encePairwiseOnDemand]: 273/297 looper letters, 54 selfloop transitions, 5 changer transitions 0/303 dead transitions. [2024-10-31 21:55:46,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 303 transitions, 836 flow [2024-10-31 21:55:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:55:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:55:46,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1640 transitions. [2024-10-31 21:55:46,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.920314253647587 [2024-10-31 21:55:46,572 INFO L175 Difference]: Start difference. First operand has 281 places, 297 transitions, 622 flow. Second operand 6 states and 1640 transitions. [2024-10-31 21:55:46,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 303 transitions, 836 flow [2024-10-31 21:55:46,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 303 transitions, 806 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-31 21:55:46,592 INFO L231 Difference]: Finished difference. Result has 273 places, 267 transitions, 566 flow [2024-10-31 21:55:46,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=566, PETRI_PLACES=273, PETRI_TRANSITIONS=267} [2024-10-31 21:55:46,599 INFO L277 CegarLoopForPetriNet]: 281 programPoint places, -8 predicate places. [2024-10-31 21:55:46,600 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 267 transitions, 566 flow [2024-10-31 21:55:46,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 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 21:55:46,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:46,602 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 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 21:55:46,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:55:46,602 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-31 21:55:46,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1343775760, now seen corresponding path program 1 times [2024-10-31 21:55:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:46,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084751289] [2024-10-31 21:55:46,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:46,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:55:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:55:46,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:55:46,657 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 21:55:46,657 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-31 21:55:46,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-10-31 21:55:46,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-10-31 21:55:46,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-10-31 21:55:46,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-10-31 21:55:46,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-10-31 21:55:46,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-10-31 21:55:46,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-10-31 21:55:46,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-10-31 21:55:46,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-10-31 21:55:46,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-10-31 21:55:46,660 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-10-31 21:55:46,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-10-31 21:55:46,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-10-31 21:55:46,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-10-31 21:55:46,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-10-31 21:55:46,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-10-31 21:55:46,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-10-31 21:55:46,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-10-31 21:55:46,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-10-31 21:55:46,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-10-31 21:55:46,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:55:46,663 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 21:55:46,664 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 21:55:46,664 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-31 21:55:46,744 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 21:55:46,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 362 transitions, 764 flow [2024-10-31 21:55:46,863 INFO L124 PetriNetUnfolderBase]: 36/415 cut-off events. [2024-10-31 21:55:46,863 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-31 21:55:46,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 415 events. 36/415 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1416 event pairs, 0 based on Foata normal form. 0/353 useless extension candidates. Maximal degree in co-relation 352. Up to 12 conditions per place. [2024-10-31 21:55:46,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 362 transitions, 764 flow [2024-10-31 21:55:46,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 764 flow [2024-10-31 21:55:46,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:55:46,884 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;@4514d4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:55:46,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-31 21:55:46,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 21:55:46,904 INFO L124 PetriNetUnfolderBase]: 9/136 cut-off events. [2024-10-31 21:55:46,904 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-31 21:55:46,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:46,904 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] [2024-10-31 21:55:46,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-31 21:55:46,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash 571436834, now seen corresponding path program 1 times [2024-10-31 21:55:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2783743] [2024-10-31 21:55:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:46,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:47,446 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 21:55:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2783743] [2024-10-31 21:55:47,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2783743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:47,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:55:47,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:55:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127466220] [2024-10-31 21:55:47,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:47,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:55:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:55:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:55:47,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 362 [2024-10-31 21:55:47,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 362 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 309.6666666666667) internal successors, (1858), 6 states have internal predecessors, (1858), 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 21:55:47,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:55:47,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 362 [2024-10-31 21:55:47,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 21:55:56,132 INFO L124 PetriNetUnfolderBase]: 4694/23547 cut-off events. [2024-10-31 21:55:56,132 INFO L125 PetriNetUnfolderBase]: For 8329/8329 co-relation queries the response was YES. [2024-10-31 21:55:56,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32108 conditions, 23547 events. 4694/23547 cut-off events. For 8329/8329 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 303213 event pairs, 1824 based on Foata normal form. 9019/29692 useless extension candidates. Maximal degree in co-relation 9664. Up to 2552 conditions per place. [2024-10-31 21:55:56,965 INFO L140 encePairwiseOnDemand]: 334/362 looper letters, 69 selfloop transitions, 5 changer transitions 0/374 dead transitions. [2024-10-31 21:55:56,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 374 transitions, 1064 flow [2024-10-31 21:55:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:55:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 21:55:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2017 transitions. [2024-10-31 21:55:56,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9286372007366482 [2024-10-31 21:55:56,970 INFO L175 Difference]: Start difference. First operand has 342 places, 362 transitions, 764 flow. Second operand 6 states and 2017 transitions. [2024-10-31 21:55:56,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 374 transitions, 1064 flow [2024-10-31 21:55:56,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 374 transitions, 1004 flow, removed 30 selfloop flow, removed 0 redundant places. [2024-10-31 21:55:56,988 INFO L231 Difference]: Finished difference. Result has 332 places, 326 transitions, 690 flow [2024-10-31 21:55:56,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=362, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=690, PETRI_PLACES=332, PETRI_TRANSITIONS=326} [2024-10-31 21:55:56,990 INFO L277 CegarLoopForPetriNet]: 342 programPoint places, -10 predicate places. [2024-10-31 21:55:56,990 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 326 transitions, 690 flow [2024-10-31 21:55:56,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 309.6666666666667) internal successors, (1858), 6 states have internal predecessors, (1858), 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 21:55:56,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 21:55:56,993 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] [2024-10-31 21:55:56,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:55:56,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-31 21:55:56,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:55:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -827579930, now seen corresponding path program 1 times [2024-10-31 21:55:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:55:56,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598151525] [2024-10-31 21:55:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:55:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:55:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:55:57,044 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 21:55:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:55:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598151525] [2024-10-31 21:55:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598151525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:55:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:55:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:55:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368140752] [2024-10-31 21:55:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:55:57,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:55:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:55:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:55:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:55:57,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 362 [2024-10-31 21:55:57,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 326 transitions, 690 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 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 21:55:57,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 21:55:57,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 362 [2024-10-31 21:55:57,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand