./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd --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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:12:45,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:12:45,470 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-13 14:12:45,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:12:45,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:12:45,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:12:45,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:12:45,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:12:45,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:12:45,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:12:45,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:12:45,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:12:45,527 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:12:45,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:12:45,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:12:45,528 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:12:45,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-13 14:12:45,529 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:12:45,530 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:12:45,530 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:12:45,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:12:45,530 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:12:45,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:12:45,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:12:45,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:12:45,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:12:45,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:12:45,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:12:45,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:12:45,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:12:45,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:12:45,532 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:12:45,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:12:45,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:12:45,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:12:45,533 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd 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 -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-11-13 14:12:45,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:12:45,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:12:45,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:12:45,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:12:45,942 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:12:45,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i Unable to find full path for "g++" [2024-11-13 14:12:47,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:12:48,417 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:12:48,418 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-13 14:12:48,444 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/data/95618de25/104a2991bdae4c9ea573abe309c5c280/FLAG97c64ac8b [2024-11-13 14:12:48,470 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/data/95618de25/104a2991bdae4c9ea573abe309c5c280 [2024-11-13 14:12:48,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:12:48,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:12:48,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:12:48,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:12:48,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:12:48,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:12:48" (1/1) ... [2024-11-13 14:12:48,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6125fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:48, skipping insertion in model container [2024-11-13 14:12:48,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:12:48" (1/1) ... [2024-11-13 14:12:48,546 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:12:49,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:12:49,029 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:12:49,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:12:49,131 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:12:49,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49 WrapperNode [2024-11-13 14:12:49,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:12:49,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:12:49,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:12:49,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:12:49,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,172 INFO L138 Inliner]: procedures = 173, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2024-11-13 14:12:49,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:12:49,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:12:49,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:12:49,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:12:49,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:12:49,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:12:49,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:12:49,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:12:49,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (1/1) ... [2024-11-13 14:12:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:12:49,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:49,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:12:49,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:12:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 14:12:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 14:12:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:12:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:12:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 14:12:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 14:12:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 14:12:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 14:12:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:12:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:12:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:12:49,269 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:12:49,434 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:12:49,436 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:12:49,826 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:12:49,826 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:12:49,868 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:12:49,869 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-13 14:12:49,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:12:49 BoogieIcfgContainer [2024-11-13 14:12:49,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:12:49,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:12:49,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:12:49,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:12:49,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:12:48" (1/3) ... [2024-11-13 14:12:49,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272ea62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:12:49, skipping insertion in model container [2024-11-13 14:12:49,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:12:49" (2/3) ... [2024-11-13 14:12:49,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272ea62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:12:49, skipping insertion in model container [2024-11-13 14:12:49,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:12:49" (3/3) ... [2024-11-13 14:12:49,883 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-11-13 14:12:49,901 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:12:49,904 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_22-deref_read_racefree.i that has 2 procedures, 153 locations, 1 initial locations, 5 loop locations, and 10 error locations. [2024-11-13 14:12:49,905 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:12:50,019 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:12:50,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 164 transitions, 332 flow [2024-11-13 14:12:50,183 INFO L124 PetriNetUnfolderBase]: 16/219 cut-off events. [2024-11-13 14:12:50,190 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:12:50,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 219 events. 16/219 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 618 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2024-11-13 14:12:50,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 164 transitions, 332 flow [2024-11-13 14:12:50,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 164 transitions, 332 flow [2024-11-13 14:12:50,223 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:12:50,236 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;@2ca766fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:12:50,236 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-13 14:12:50,256 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:12:50,256 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-11-13 14:12:50,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:12:50,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:50,257 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] [2024-11-13 14:12:50,257 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-13 14:12:50,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -663056740, now seen corresponding path program 1 times [2024-11-13 14:12:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:50,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132797718] [2024-11-13 14:12:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:50,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132797718] [2024-11-13 14:12:50,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132797718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:50,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:12:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587900428] [2024-11-13 14:12:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:50,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:12:50,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:12:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:12:50,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 164 [2024-11-13 14:12:50,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 164 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2024-11-13 14:12:50,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:12:50,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 164 [2024-11-13 14:12:50,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:12:50,840 INFO L124 PetriNetUnfolderBase]: 48/509 cut-off events. [2024-11-13 14:12:50,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:12:50,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 509 events. 48/509 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2270 event pairs, 0 based on Foata normal form. 58/518 useless extension candidates. Maximal degree in co-relation 572. Up to 106 conditions per place. [2024-11-13 14:12:50,845 INFO L140 encePairwiseOnDemand]: 150/164 looper letters, 21 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2024-11-13 14:12:50,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 157 transitions, 364 flow [2024-11-13 14:12:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:12:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:12:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2024-11-13 14:12:50,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9085365853658537 [2024-11-13 14:12:50,869 INFO L175 Difference]: Start difference. First operand has 156 places, 164 transitions, 332 flow. Second operand 3 states and 447 transitions. [2024-11-13 14:12:50,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 157 transitions, 364 flow [2024-11-13 14:12:50,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 157 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:12:50,883 INFO L231 Difference]: Finished difference. Result has 157 places, 151 transitions, 314 flow [2024-11-13 14:12:50,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=157, PETRI_TRANSITIONS=151} [2024-11-13 14:12:50,893 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2024-11-13 14:12:50,893 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 151 transitions, 314 flow [2024-11-13 14:12:50,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2024-11-13 14:12:50,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:50,894 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] [2024-11-13 14:12:50,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:12:50,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-13 14:12:50,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1773308473, now seen corresponding path program 1 times [2024-11-13 14:12:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624392924] [2024-11-13 14:12:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:51,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624392924] [2024-11-13 14:12:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624392924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793206719] [2024-11-13 14:12:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:51,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:51,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:51,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:12:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:51,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:12:51,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:12:51,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:12:51,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793206719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:51,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:51,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 14:12:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509240239] [2024-11-13 14:12:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:51,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:12:51,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:51,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:12:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:12:51,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 164 [2024-11-13 14:12:51,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 151 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2024-11-13 14:12:51,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:12:51,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 164 [2024-11-13 14:12:51,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:12:51,553 INFO L124 PetriNetUnfolderBase]: 60/624 cut-off events. [2024-11-13 14:12:51,553 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:12:51,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 624 events. 60/624 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3004 event pairs, 40 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 722. Up to 134 conditions per place. [2024-11-13 14:12:51,558 INFO L140 encePairwiseOnDemand]: 159/164 looper letters, 19 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-11-13 14:12:51,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 152 transitions, 358 flow [2024-11-13 14:12:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:12:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:12:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2024-11-13 14:12:51,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2024-11-13 14:12:51,564 INFO L175 Difference]: Start difference. First operand has 157 places, 151 transitions, 314 flow. Second operand 3 states and 420 transitions. [2024-11-13 14:12:51,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 152 transitions, 358 flow [2024-11-13 14:12:51,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 152 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:12:51,568 INFO L231 Difference]: Finished difference. Result has 155 places, 150 transitions, 318 flow [2024-11-13 14:12:51,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=155, PETRI_TRANSITIONS=150} [2024-11-13 14:12:51,571 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, -1 predicate places. [2024-11-13 14:12:51,572 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 150 transitions, 318 flow [2024-11-13 14:12:51,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2024-11-13 14:12:51,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:51,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:51,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:12:51,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:51,777 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-13 14:12:51,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:51,777 INFO L85 PathProgramCache]: Analyzing trace with hash 862611337, now seen corresponding path program 1 times [2024-11-13 14:12:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:51,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671185341] [2024-11-13 14:12:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:12:51,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:12:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:12:51,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:12:51,865 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:12:51,866 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-13 14:12:51,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-11-13 14:12:51,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-11-13 14:12:51,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-11-13 14:12:51,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-11-13 14:12:51,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-11-13 14:12:51,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-11-13 14:12:51,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-11-13 14:12:51,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-11-13 14:12:51,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-11-13 14:12:51,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:12:51,876 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 14:12:51,881 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:12:51,881 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 14:12:51,929 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:12:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 234 transitions, 478 flow [2024-11-13 14:12:51,997 INFO L124 PetriNetUnfolderBase]: 27/347 cut-off events. [2024-11-13 14:12:51,997 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:12:52,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 347 events. 27/347 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1371 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 220. Up to 6 conditions per place. [2024-11-13 14:12:52,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 234 transitions, 478 flow [2024-11-13 14:12:52,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 234 transitions, 478 flow [2024-11-13 14:12:52,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:12:52,005 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;@2ca766fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:12:52,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-13 14:12:52,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:12:52,011 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-11-13 14:12:52,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:12:52,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:52,011 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] [2024-11-13 14:12:52,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 14:12:52,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:52,012 INFO L85 PathProgramCache]: Analyzing trace with hash 429345734, now seen corresponding path program 1 times [2024-11-13 14:12:52,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:52,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574302239] [2024-11-13 14:12:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:52,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:52,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:52,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574302239] [2024-11-13 14:12:52,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574302239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:52,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:52,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:12:52,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590737771] [2024-11-13 14:12:52,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:52,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:12:52,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:12:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:12:52,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 234 [2024-11-13 14:12:52,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 234 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:12:52,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:12:52,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 234 [2024-11-13 14:12:52,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:12:53,395 INFO L124 PetriNetUnfolderBase]: 762/5749 cut-off events. [2024-11-13 14:12:53,395 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-13 14:12:53,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7044 conditions, 5749 events. 762/5749 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 56946 event pairs, 686 based on Foata normal form. 673/5845 useless extension candidates. Maximal degree in co-relation 5411. Up to 1261 conditions per place. [2024-11-13 14:12:53,434 INFO L140 encePairwiseOnDemand]: 214/234 looper letters, 29 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2024-11-13 14:12:53,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 222 transitions, 516 flow [2024-11-13 14:12:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:12:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:12:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2024-11-13 14:12:53,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9002849002849003 [2024-11-13 14:12:53,437 INFO L175 Difference]: Start difference. First operand has 222 places, 234 transitions, 478 flow. Second operand 3 states and 632 transitions. [2024-11-13 14:12:53,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 222 transitions, 516 flow [2024-11-13 14:12:53,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 222 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:12:53,442 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 452 flow [2024-11-13 14:12:53,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-11-13 14:12:53,443 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 1 predicate places. [2024-11-13 14:12:53,443 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 452 flow [2024-11-13 14:12:53,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:12:53,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:53,444 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] [2024-11-13 14:12:53,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:12:53,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 14:12:53,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1087695348, now seen corresponding path program 1 times [2024-11-13 14:12:53,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:53,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110513836] [2024-11-13 14:12:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:53,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110513836] [2024-11-13 14:12:53,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110513836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:53,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842582858] [2024-11-13 14:12:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:53,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:53,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:53,606 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:53,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:12:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:53,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:12:53,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:12:53,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:12:53,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842582858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:53,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 14:12:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292309694] [2024-11-13 14:12:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:53,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:12:53,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:12:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:12:53,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 234 [2024-11-13 14:12:53,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2024-11-13 14:12:53,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:12:53,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 234 [2024-11-13 14:12:53,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:12:55,526 INFO L124 PetriNetUnfolderBase]: 1490/8257 cut-off events. [2024-11-13 14:12:55,528 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-13 14:12:55,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10718 conditions, 8257 events. 1490/8257 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 87079 event pairs, 1046 based on Foata normal form. 0/7654 useless extension candidates. Maximal degree in co-relation 10664. Up to 2396 conditions per place. [2024-11-13 14:12:55,609 INFO L140 encePairwiseOnDemand]: 226/234 looper letters, 33 selfloop transitions, 3 changer transitions 0/219 dead transitions. [2024-11-13 14:12:55,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 219 transitions, 535 flow [2024-11-13 14:12:55,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:12:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:12:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2024-11-13 14:12:55,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8404558404558404 [2024-11-13 14:12:55,618 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 452 flow. Second operand 3 states and 590 transitions. [2024-11-13 14:12:55,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 219 transitions, 535 flow [2024-11-13 14:12:55,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 219 transitions, 533 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:12:55,629 INFO L231 Difference]: Finished difference. Result has 220 places, 214 transitions, 461 flow [2024-11-13 14:12:55,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=220, PETRI_TRANSITIONS=214} [2024-11-13 14:12:55,632 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, -2 predicate places. [2024-11-13 14:12:55,632 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 214 transitions, 461 flow [2024-11-13 14:12:55,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 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) [2024-11-13 14:12:55,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:55,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:12:55,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:12:55,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:55,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 14:12:55,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1770996342, now seen corresponding path program 1 times [2024-11-13 14:12:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983161512] [2024-11-13 14:12:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:56,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:56,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983161512] [2024-11-13 14:12:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983161512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:56,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853636362] [2024-11-13 14:12:56,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:56,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:56,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:56,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:56,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:12:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:56,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:12:56,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:12:56,143 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:12:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853636362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:56,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:12:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 14:12:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624174632] [2024-11-13 14:12:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:56,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:12:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:12:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:12:56,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 234 [2024-11-13 14:12:56,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 214 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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) [2024-11-13 14:12:56,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:12:56,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 234 [2024-11-13 14:12:56,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:12:57,289 INFO L124 PetriNetUnfolderBase]: 1057/4955 cut-off events. [2024-11-13 14:12:57,290 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-13 14:12:57,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6782 conditions, 4955 events. 1057/4955 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 45975 event pairs, 854 based on Foata normal form. 0/4460 useless extension candidates. Maximal degree in co-relation 6045. Up to 1434 conditions per place. [2024-11-13 14:12:57,332 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 35 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2024-11-13 14:12:57,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 225 transitions, 557 flow [2024-11-13 14:12:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:12:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:12:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2024-11-13 14:12:57,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8660968660968661 [2024-11-13 14:12:57,339 INFO L175 Difference]: Start difference. First operand has 220 places, 214 transitions, 461 flow. Second operand 3 states and 608 transitions. [2024-11-13 14:12:57,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 225 transitions, 557 flow [2024-11-13 14:12:57,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 225 transitions, 557 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:12:57,346 INFO L231 Difference]: Finished difference. Result has 221 places, 213 transitions, 463 flow [2024-11-13 14:12:57,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=221, PETRI_TRANSITIONS=213} [2024-11-13 14:12:57,347 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2024-11-13 14:12:57,347 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 213 transitions, 463 flow [2024-11-13 14:12:57,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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) [2024-11-13 14:12:57,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:12:57,348 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] [2024-11-13 14:12:57,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:12:57,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:12:57,549 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 14:12:57,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:12:57,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1489565109, now seen corresponding path program 1 times [2024-11-13 14:12:57,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:12:57,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249575995] [2024-11-13 14:12:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:12:57,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:12:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:58,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:58,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249575995] [2024-11-13 14:12:58,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249575995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:12:58,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:12:58,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:12:58,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543393797] [2024-11-13 14:12:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:12:58,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:12:58,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:12:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:12:58,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 234 [2024-11-13 14:12:58,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 213 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 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) [2024-11-13 14:12:58,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:12:58,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 234 [2024-11-13 14:12:58,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:13:03,335 INFO L124 PetriNetUnfolderBase]: 14160/34142 cut-off events. [2024-11-13 14:13:03,336 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-13 14:13:03,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57549 conditions, 34142 events. 14160/34142 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 383822 event pairs, 4227 based on Foata normal form. 0/32921 useless extension candidates. Maximal degree in co-relation 56544. Up to 10096 conditions per place. [2024-11-13 14:13:03,567 INFO L140 encePairwiseOnDemand]: 190/234 looper letters, 219 selfloop transitions, 84 changer transitions 0/453 dead transitions. [2024-11-13 14:13:03,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 453 transitions, 1569 flow [2024-11-13 14:13:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:13:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:13:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2024-11-13 14:13:03,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8725071225071225 [2024-11-13 14:13:03,573 INFO L175 Difference]: Start difference. First operand has 221 places, 213 transitions, 463 flow. Second operand 6 states and 1225 transitions. [2024-11-13 14:13:03,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 453 transitions, 1569 flow [2024-11-13 14:13:03,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 453 transitions, 1565 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 14:13:03,585 INFO L231 Difference]: Finished difference. Result has 229 places, 305 transitions, 1091 flow [2024-11-13 14:13:03,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1091, PETRI_PLACES=229, PETRI_TRANSITIONS=305} [2024-11-13 14:13:03,588 INFO L277 CegarLoopForPetriNet]: 222 programPoint places, 7 predicate places. [2024-11-13 14:13:03,588 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 305 transitions, 1091 flow [2024-11-13 14:13:03,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.5) internal successors, (927), 6 states have internal predecessors, (927), 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) [2024-11-13 14:13:03,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:13:03,589 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:03,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:13:03,590 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-13 14:13:03,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:03,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1772725390, now seen corresponding path program 1 times [2024-11-13 14:13:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:03,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497078045] [2024-11-13 14:13:03,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:13:03,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:13:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:13:03,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:13:03,653 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:13:03,653 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-13 14:13:03,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-13 14:13:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-13 14:13:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-13 14:13:03,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:13:03,657 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-13 14:13:03,657 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:13:03,657 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 14:13:03,707 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:13:03,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 304 transitions, 626 flow [2024-11-13 14:13:03,776 INFO L124 PetriNetUnfolderBase]: 38/475 cut-off events. [2024-11-13 14:13:03,777 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 14:13:03,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 475 events. 38/475 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2174 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 351. Up to 8 conditions per place. [2024-11-13 14:13:03,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 304 transitions, 626 flow [2024-11-13 14:13:03,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 288 places, 304 transitions, 626 flow [2024-11-13 14:13:03,788 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:13:03,789 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;@2ca766fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:13:03,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-13 14:13:03,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:13:03,792 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-11-13 14:13:03,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:13:03,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:13:03,793 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] [2024-11-13 14:13:03,793 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-13 14:13:03,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2068790006, now seen corresponding path program 1 times [2024-11-13 14:13:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:03,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453935940] [2024-11-13 14:13:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:03,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:03,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453935940] [2024-11-13 14:13:03,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453935940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:13:03,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:13:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:13:03,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447966075] [2024-11-13 14:13:03,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:13:03,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:13:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:13:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:13:03,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 304 [2024-11-13 14:13:03,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 304 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2024-11-13 14:13:03,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:13:03,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 304 [2024-11-13 14:13:03,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:13:10,746 INFO L124 PetriNetUnfolderBase]: 8406/45183 cut-off events. [2024-11-13 14:13:10,747 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-13 14:13:10,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57406 conditions, 45183 events. 8406/45183 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 635595 event pairs, 7889 based on Foata normal form. 6810/47716 useless extension candidates. Maximal degree in co-relation 42816. Up to 11992 conditions per place. [2024-11-13 14:13:11,092 INFO L140 encePairwiseOnDemand]: 278/304 looper letters, 36 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2024-11-13 14:13:11,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 286 transitions, 666 flow [2024-11-13 14:13:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:13:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:13:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2024-11-13 14:13:11,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8947368421052632 [2024-11-13 14:13:11,096 INFO L175 Difference]: Start difference. First operand has 288 places, 304 transitions, 626 flow. Second operand 3 states and 816 transitions. [2024-11-13 14:13:11,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 286 transitions, 666 flow [2024-11-13 14:13:11,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 286 transitions, 664 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 14:13:11,105 INFO L231 Difference]: Finished difference. Result has 289 places, 280 transitions, 586 flow [2024-11-13 14:13:11,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=289, PETRI_TRANSITIONS=280} [2024-11-13 14:13:11,108 INFO L277 CegarLoopForPetriNet]: 288 programPoint places, 1 predicate places. [2024-11-13 14:13:11,108 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 280 transitions, 586 flow [2024-11-13 14:13:11,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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) [2024-11-13 14:13:11,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:13:11,109 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] [2024-11-13 14:13:11,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:13:11,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-13 14:13:11,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:11,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1860273495, now seen corresponding path program 1 times [2024-11-13 14:13:11,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:11,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312482636] [2024-11-13 14:13:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:11,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312482636] [2024-11-13 14:13:11,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312482636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:11,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025206957] [2024-11-13 14:13:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:11,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:11,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:11,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:13:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:11,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:13:11,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:13:11,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:13:11,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025206957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:13:11,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:13:11,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 14:13:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822617606] [2024-11-13 14:13:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:13:11,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:13:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:13:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:13:11,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 304 [2024-11-13 14:13:11,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 280 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2024-11-13 14:13:11,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:13:11,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 304 [2024-11-13 14:13:11,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:13:26,187 INFO L124 PetriNetUnfolderBase]: 25690/105481 cut-off events. [2024-11-13 14:13:26,187 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-11-13 14:13:26,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141825 conditions, 105481 events. 25690/105481 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 1872. Compared 1597694 event pairs, 18666 based on Foata normal form. 0/98235 useless extension candidates. Maximal degree in co-relation 141770. Up to 35850 conditions per place. [2024-11-13 14:13:27,085 INFO L140 encePairwiseOnDemand]: 293/304 looper letters, 47 selfloop transitions, 4 changer transitions 0/285 dead transitions. [2024-11-13 14:13:27,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 285 transitions, 708 flow [2024-11-13 14:13:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:13:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:13:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2024-11-13 14:13:27,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-11-13 14:13:27,089 INFO L175 Difference]: Start difference. First operand has 289 places, 280 transitions, 586 flow. Second operand 3 states and 760 transitions. [2024-11-13 14:13:27,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 285 transitions, 708 flow [2024-11-13 14:13:27,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 285 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:13:27,096 INFO L231 Difference]: Finished difference. Result has 284 places, 277 transitions, 598 flow [2024-11-13 14:13:27,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=284, PETRI_TRANSITIONS=277} [2024-11-13 14:13:27,097 INFO L277 CegarLoopForPetriNet]: 288 programPoint places, -4 predicate places. [2024-11-13 14:13:27,098 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 277 transitions, 598 flow [2024-11-13 14:13:27,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2024-11-13 14:13:27,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:13:27,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:27,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:13:27,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:13:27,303 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-13 14:13:27,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1864753217, now seen corresponding path program 1 times [2024-11-13 14:13:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877297642] [2024-11-13 14:13:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:27,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:27,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877297642] [2024-11-13 14:13:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877297642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820565610] [2024-11-13 14:13:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:27,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:27,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:27,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:27,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:13:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:27,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:13:27,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:13:27,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:13:27,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820565610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:13:27,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:13:27,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 14:13:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840584647] [2024-11-13 14:13:27,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:13:27,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:13:27,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:27,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:13:27,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:13:27,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 304 [2024-11-13 14:13:27,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 277 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2024-11-13 14:13:27,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:13:27,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 304 [2024-11-13 14:13:27,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:13:37,220 INFO L124 PetriNetUnfolderBase]: 12695/55840 cut-off events. [2024-11-13 14:13:37,220 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-13 14:13:37,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74762 conditions, 55840 events. 12695/55840 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 790175 event pairs, 10298 based on Foata normal form. 0/51152 useless extension candidates. Maximal degree in co-relation 74024. Up to 14427 conditions per place. [2024-11-13 14:13:37,706 INFO L140 encePairwiseOnDemand]: 301/304 looper letters, 48 selfloop transitions, 2 changer transitions 0/294 dead transitions. [2024-11-13 14:13:37,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 294 transitions, 732 flow [2024-11-13 14:13:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:13:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:13:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 792 transitions. [2024-11-13 14:13:37,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2024-11-13 14:13:37,709 INFO L175 Difference]: Start difference. First operand has 284 places, 277 transitions, 598 flow. Second operand 3 states and 792 transitions. [2024-11-13 14:13:37,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 294 transitions, 732 flow [2024-11-13 14:13:37,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 294 transitions, 732 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:13:37,715 INFO L231 Difference]: Finished difference. Result has 285 places, 276 transitions, 600 flow [2024-11-13 14:13:37,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=285, PETRI_TRANSITIONS=276} [2024-11-13 14:13:37,716 INFO L277 CegarLoopForPetriNet]: 288 programPoint places, -3 predicate places. [2024-11-13 14:13:37,716 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 276 transitions, 600 flow [2024-11-13 14:13:37,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 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) [2024-11-13 14:13:37,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:13:37,717 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] [2024-11-13 14:13:37,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:13:37,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe9f0f5-0cb0-446d-8641-3d759886b6d5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:13:37,918 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-11-13 14:13:37,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:37,918 INFO L85 PathProgramCache]: Analyzing trace with hash -903145328, now seen corresponding path program 1 times [2024-11-13 14:13:37,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:37,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809683543] [2024-11-13 14:13:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:37,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:38,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:38,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809683543] [2024-11-13 14:13:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809683543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:13:38,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:13:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:13:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430682614] [2024-11-13 14:13:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:13:38,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:13:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:38,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:13:38,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:13:38,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 304 [2024-11-13 14:13:38,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 276 transitions, 600 flow. Second operand has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 states have internal predecessors, (1137), 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) [2024-11-13 14:13:38,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:13:38,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 304 [2024-11-13 14:13:38,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand