./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.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_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/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_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/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_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/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 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:17:08,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:17:08,266 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-13 14:17:08,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:17:08,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:17:08,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:17:08,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:17:08,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:17:08,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:17:08,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:17:08,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:17:08,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:17:08,297 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:17:08,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:17:08,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:17:08,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:17:08,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:17:08,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:17:08,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:17:08,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:17:08,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:17:08,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:17:08,299 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:17:08,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:17:08,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:17:08,301 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_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/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 -> 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed [2024-11-13 14:17:08,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:17:08,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:17:08,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:17:08,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:17:08,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:17:08,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i Unable to find full path for "g++" [2024-11-13 14:17:10,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:17:10,911 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:17:10,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-13 14:17:10,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/data/0cf1f4dd0/f42daf6bfe54430683376b399b44cb6d/FLAG9031ff4d9 [2024-11-13 14:17:11,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/data/0cf1f4dd0/f42daf6bfe54430683376b399b44cb6d [2024-11-13 14:17:11,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:17:11,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:17:11,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:17:11,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:17:11,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:17:11,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2883c547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11, skipping insertion in model container [2024-11-13 14:17:11,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:17:11,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:17:11,564 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:17:11,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:17:11,639 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:17:11,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11 WrapperNode [2024-11-13 14:17:11,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:17:11,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:17:11,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:17:11,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:17:11,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,657 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,676 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2024-11-13 14:17:11,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:17:11,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:17:11,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:17:11,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:17:11,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,705 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:17:11,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:17:11,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:17:11,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:17:11,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (1/1) ... [2024-11-13 14:17:11,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:17:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:11,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:17:11,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aed45fc7-c0e6-4af4-8385-78ad5ba8bc71/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:17:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 14:17:11,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 14:17:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 14:17:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 14:17:11,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:17:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 14:17:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 14:17:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 14:17:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 14:17:11,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:17:11,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:17:11,779 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 14:17:11,954 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:17:11,956 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:17:12,192 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:17:12,192 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:17:12,261 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:17:12,262 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:17:12,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:17:12 BoogieIcfgContainer [2024-11-13 14:17:12,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:17:12,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:17:12,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:17:12,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:17:12,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:17:11" (1/3) ... [2024-11-13 14:17:12,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e10a880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:17:12, skipping insertion in model container [2024-11-13 14:17:12,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:17:11" (2/3) ... [2024-11-13 14:17:12,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e10a880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:17:12, skipping insertion in model container [2024-11-13 14:17:12,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:17:12" (3/3) ... [2024-11-13 14:17:12,277 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-11-13 14:17:12,295 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:17:12,298 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 39_rand_lock_p0_vs.i that has 2 procedures, 74 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2024-11-13 14:17:12,298 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:17:12,387 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:17:12,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 158 flow [2024-11-13 14:17:12,493 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-11-13 14:17:12,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:17:12,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 4/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2024-11-13 14:17:12,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 158 flow [2024-11-13 14:17:12,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 158 flow [2024-11-13 14:17:12,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:17:12,537 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;@88a9cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:17:12,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 14:17:12,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:17:12,564 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-13 14:17:12,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 14:17:12,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:12,565 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:12,566 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 14:17:12,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:12,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1257974738, now seen corresponding path program 1 times [2024-11-13 14:17:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:12,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391201735] [2024-11-13 14:17:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:12,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:12,834 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 14:17:12,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:12,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391201735] [2024-11-13 14:17:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391201735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:12,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:12,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:17:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253333711] [2024-11-13 14:17:12,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:12,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:17:12,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:17:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:17:12,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 77 [2024-11-13 14:17:12,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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 14:17:12,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:12,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 77 [2024-11-13 14:17:12,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:12,949 INFO L124 PetriNetUnfolderBase]: 1/73 cut-off events. [2024-11-13 14:17:12,950 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:17:12,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 1/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 7/78 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2024-11-13 14:17:12,952 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 5 selfloop transitions, 0 changer transitions 0/69 dead transitions. [2024-11-13 14:17:12,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 152 flow [2024-11-13 14:17:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:17:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:17:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2024-11-13 14:17:12,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.935064935064935 [2024-11-13 14:17:12,973 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 158 flow. Second operand 2 states and 144 transitions. [2024-11-13 14:17:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 152 flow [2024-11-13 14:17:12,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:12,988 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 142 flow [2024-11-13 14:17:12,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=142, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-13 14:17:12,996 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -5 predicate places. [2024-11-13 14:17:12,996 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 142 flow [2024-11-13 14:17:12,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 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 14:17:12,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:12,997 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] [2024-11-13 14:17:12,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:17:12,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 14:17:12,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 22161583, now seen corresponding path program 1 times [2024-11-13 14:17:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313567647] [2024-11-13 14:17:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:13,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:13,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:17:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:13,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:17:13,089 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:17:13,091 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-13 14:17:13,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-11-13 14:17:13,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-11-13 14:17:13,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-11-13 14:17:13,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-11-13 14:17:13,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-11-13 14:17:13,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-11-13 14:17:13,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:17:13,095 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 14:17:13,098 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:17:13,098 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 14:17:13,171 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:17:13,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 122 transitions, 254 flow [2024-11-13 14:17:13,223 INFO L124 PetriNetUnfolderBase]: 7/142 cut-off events. [2024-11-13 14:17:13,223 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 14:17:13,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 142 events. 7/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 203 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2024-11-13 14:17:13,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 122 transitions, 254 flow [2024-11-13 14:17:13,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 122 transitions, 254 flow [2024-11-13 14:17:13,228 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:17:13,229 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;@88a9cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:17:13,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-13 14:17:13,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:17:13,239 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-13 14:17:13,239 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:17:13,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:13,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:13,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-13 14:17:13,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:13,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1466332626, now seen corresponding path program 1 times [2024-11-13 14:17:13,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:13,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332765115] [2024-11-13 14:17:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:13,322 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 14:17:13,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332765115] [2024-11-13 14:17:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332765115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:13,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:17:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589665992] [2024-11-13 14:17:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:13,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:17:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:13,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:17:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:17:13,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 122 [2024-11-13 14:17:13,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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 14:17:13,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:13,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 122 [2024-11-13 14:17:13,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:13,489 INFO L124 PetriNetUnfolderBase]: 27/343 cut-off events. [2024-11-13 14:17:13,491 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-13 14:17:13,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 343 events. 27/343 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1240 event pairs, 20 based on Foata normal form. 40/367 useless extension candidates. Maximal degree in co-relation 311. Up to 51 conditions per place. [2024-11-13 14:17:13,495 INFO L140 encePairwiseOnDemand]: 114/122 looper letters, 10 selfloop transitions, 0 changer transitions 0/111 dead transitions. [2024-11-13 14:17:13,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 252 flow [2024-11-13 14:17:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:17:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:17:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 226 transitions. [2024-11-13 14:17:13,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9262295081967213 [2024-11-13 14:17:13,498 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 254 flow. Second operand 2 states and 226 transitions. [2024-11-13 14:17:13,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 252 flow [2024-11-13 14:17:13,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:13,501 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 232 flow [2024-11-13 14:17:13,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=232, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2024-11-13 14:17:13,502 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -7 predicate places. [2024-11-13 14:17:13,502 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 232 flow [2024-11-13 14:17:13,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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 14:17:13,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:13,502 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] [2024-11-13 14:17:13,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:17:13,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-13 14:17:13,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1317438891, now seen corresponding path program 1 times [2024-11-13 14:17:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871988398] [2024-11-13 14:17:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:13,596 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 14:17:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:13,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871988398] [2024-11-13 14:17:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871988398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:13,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:13,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:17:13,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125604831] [2024-11-13 14:17:13,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:13,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:13,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:13,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 122 [2024-11-13 14:17:13,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 14:17:13,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:13,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 122 [2024-11-13 14:17:13,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:13,760 INFO L124 PetriNetUnfolderBase]: 64/531 cut-off events. [2024-11-13 14:17:13,760 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-13 14:17:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 531 events. 64/531 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2551 event pairs, 20 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 682. Up to 80 conditions per place. [2024-11-13 14:17:13,765 INFO L140 encePairwiseOnDemand]: 112/122 looper letters, 21 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-13 14:17:13,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 321 flow [2024-11-13 14:17:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:17:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2024-11-13 14:17:13,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8879781420765027 [2024-11-13 14:17:13,768 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 232 flow. Second operand 3 states and 325 transitions. [2024-11-13 14:17:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 321 flow [2024-11-13 14:17:13,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:13,773 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 300 flow [2024-11-13 14:17:13,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-11-13 14:17:13,774 INFO L277 CegarLoopForPetriNet]: 122 programPoint places, -3 predicate places. [2024-11-13 14:17:13,775 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 300 flow [2024-11-13 14:17:13,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 14:17:13,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:13,775 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:13,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:17:13,775 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-13 14:17:13,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1427659025, now seen corresponding path program 1 times [2024-11-13 14:17:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:13,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369552339] [2024-11-13 14:17:13,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:13,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:13,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:17:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:13,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:17:13,817 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:17:13,817 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-13 14:17:13,818 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-13 14:17:13,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-13 14:17:13,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:17:13,822 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 14:17:13,823 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:17:13,823 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 14:17:13,905 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:17:13,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 167 transitions, 352 flow [2024-11-13 14:17:13,950 INFO L124 PetriNetUnfolderBase]: 10/198 cut-off events. [2024-11-13 14:17:13,951 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 14:17:13,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 10/198 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 433 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 146. Up to 8 conditions per place. [2024-11-13 14:17:13,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 167 transitions, 352 flow [2024-11-13 14:17:13,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 167 transitions, 352 flow [2024-11-13 14:17:13,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:17:13,959 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;@88a9cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:17:13,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-13 14:17:13,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:17:13,964 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-13 14:17:13,964 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:17:13,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:13,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:13,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-13 14:17:13,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash 997014054, now seen corresponding path program 1 times [2024-11-13 14:17:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:13,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943940003] [2024-11-13 14:17:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:13,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:14,024 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 14:17:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943940003] [2024-11-13 14:17:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943940003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:14,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:14,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:17:14,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153568234] [2024-11-13 14:17:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:14,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:17:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:17:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:17:14,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 167 [2024-11-13 14:17:14,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 167 transitions, 352 flow. Second operand has 2 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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 14:17:14,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:14,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 167 [2024-11-13 14:17:14,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:14,470 INFO L124 PetriNetUnfolderBase]: 253/1801 cut-off events. [2024-11-13 14:17:14,471 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-13 14:17:14,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 1801 events. 253/1801 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13778 event pairs, 220 based on Foata normal form. 217/1927 useless extension candidates. Maximal degree in co-relation 1745. Up to 376 conditions per place. [2024-11-13 14:17:14,492 INFO L140 encePairwiseOnDemand]: 156/167 looper letters, 15 selfloop transitions, 0 changer transitions 0/153 dead transitions. [2024-11-13 14:17:14,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 153 transitions, 354 flow [2024-11-13 14:17:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:17:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:17:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 308 transitions. [2024-11-13 14:17:14,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9221556886227545 [2024-11-13 14:17:14,498 INFO L175 Difference]: Start difference. First operand has 167 places, 167 transitions, 352 flow. Second operand 2 states and 308 transitions. [2024-11-13 14:17:14,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 153 transitions, 354 flow [2024-11-13 14:17:14,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 153 transitions, 352 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:14,501 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 322 flow [2024-11-13 14:17:14,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=322, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-11-13 14:17:14,506 INFO L277 CegarLoopForPetriNet]: 167 programPoint places, -9 predicate places. [2024-11-13 14:17:14,506 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 322 flow [2024-11-13 14:17:14,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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 14:17:14,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:14,506 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] [2024-11-13 14:17:14,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:17:14,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-13 14:17:14,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash -244554135, now seen corresponding path program 1 times [2024-11-13 14:17:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:14,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717907220] [2024-11-13 14:17:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:14,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:14,558 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 14:17:14,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:14,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717907220] [2024-11-13 14:17:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717907220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:14,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:17:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397575560] [2024-11-13 14:17:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:14,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:14,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:14,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 167 [2024-11-13 14:17:14,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 14:17:14,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:14,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 167 [2024-11-13 14:17:14,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:15,606 INFO L124 PetriNetUnfolderBase]: 1172/5273 cut-off events. [2024-11-13 14:17:15,608 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-11-13 14:17:15,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 5273 events. 1172/5273 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 51104 event pairs, 427 based on Foata normal form. 0/5019 useless extension candidates. Maximal degree in co-relation 7299. Up to 1116 conditions per place. [2024-11-13 14:17:15,665 INFO L140 encePairwiseOnDemand]: 152/167 looper letters, 32 selfloop transitions, 12 changer transitions 0/173 dead transitions. [2024-11-13 14:17:15,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 173 transitions, 460 flow [2024-11-13 14:17:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:17:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2024-11-13 14:17:15,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8842315369261478 [2024-11-13 14:17:15,668 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 322 flow. Second operand 3 states and 443 transitions. [2024-11-13 14:17:15,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 173 transitions, 460 flow [2024-11-13 14:17:15,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 173 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:15,676 INFO L231 Difference]: Finished difference. Result has 162 places, 165 transitions, 424 flow [2024-11-13 14:17:15,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=162, PETRI_TRANSITIONS=165} [2024-11-13 14:17:15,679 INFO L277 CegarLoopForPetriNet]: 167 programPoint places, -5 predicate places. [2024-11-13 14:17:15,679 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 165 transitions, 424 flow [2024-11-13 14:17:15,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 14:17:15,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:15,680 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:15,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:17:15,680 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-11-13 14:17:15,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash -666641106, now seen corresponding path program 1 times [2024-11-13 14:17:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062748588] [2024-11-13 14:17:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:15,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:17:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:15,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:17:15,747 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-13 14:17:15,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-13 14:17:15,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-13 14:17:15,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-13 14:17:15,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-13 14:17:15,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-13 14:17:15,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-13 14:17:15,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-13 14:17:15,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:17:15,751 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 14:17:15,752 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:17:15,752 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 14:17:15,845 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:17:15,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 212 transitions, 452 flow [2024-11-13 14:17:15,919 INFO L124 PetriNetUnfolderBase]: 13/254 cut-off events. [2024-11-13 14:17:15,919 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 14:17:15,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 254 events. 13/254 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 674 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 206. Up to 10 conditions per place. [2024-11-13 14:17:15,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 212 transitions, 452 flow [2024-11-13 14:17:15,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 212 transitions, 452 flow [2024-11-13 14:17:15,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:17:15,928 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;@88a9cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:17:15,928 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-13 14:17:15,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:17:15,940 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2024-11-13 14:17:15,940 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:17:15,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:15,940 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:15,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:17:15,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1050691546, now seen corresponding path program 1 times [2024-11-13 14:17:15,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:15,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520197130] [2024-11-13 14:17:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:15,990 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 14:17:15,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:15,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520197130] [2024-11-13 14:17:15,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520197130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:15,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:15,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:17:15,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106929877] [2024-11-13 14:17:15,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:15,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:17:15,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:17:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:17:15,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 212 [2024-11-13 14:17:15,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 212 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 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 14:17:15,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:15,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 212 [2024-11-13 14:17:15,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:17,973 INFO L124 PetriNetUnfolderBase]: 1859/9591 cut-off events. [2024-11-13 14:17:17,974 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-11-13 14:17:18,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12839 conditions, 9591 events. 1859/9591 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 105772 event pairs, 1720 based on Foata normal form. 1190/10312 useless extension candidates. Maximal degree in co-relation 9683. Up to 2501 conditions per place. [2024-11-13 14:17:18,133 INFO L140 encePairwiseOnDemand]: 198/212 looper letters, 20 selfloop transitions, 0 changer transitions 0/195 dead transitions. [2024-11-13 14:17:18,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 195 transitions, 458 flow [2024-11-13 14:17:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:17:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:17:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 390 transitions. [2024-11-13 14:17:18,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9198113207547169 [2024-11-13 14:17:18,135 INFO L175 Difference]: Start difference. First operand has 212 places, 212 transitions, 452 flow. Second operand 2 states and 390 transitions. [2024-11-13 14:17:18,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 195 transitions, 458 flow [2024-11-13 14:17:18,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 195 transitions, 452 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:18,144 INFO L231 Difference]: Finished difference. Result has 201 places, 195 transitions, 412 flow [2024-11-13 14:17:18,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=412, PETRI_PLACES=201, PETRI_TRANSITIONS=195} [2024-11-13 14:17:18,146 INFO L277 CegarLoopForPetriNet]: 212 programPoint places, -11 predicate places. [2024-11-13 14:17:18,147 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 195 transitions, 412 flow [2024-11-13 14:17:18,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 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 14:17:18,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:18,148 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] [2024-11-13 14:17:18,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:17:18,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:17:18,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 510141545, now seen corresponding path program 1 times [2024-11-13 14:17:18,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:18,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737758313] [2024-11-13 14:17:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:18,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:18,220 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 14:17:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737758313] [2024-11-13 14:17:18,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737758313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:18,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:18,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:17:18,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348754157] [2024-11-13 14:17:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:18,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:18,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:18,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 212 [2024-11-13 14:17:18,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 195 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 14:17:18,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:18,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 212 [2024-11-13 14:17:18,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:26,493 INFO L124 PetriNetUnfolderBase]: 15875/52829 cut-off events. [2024-11-13 14:17:26,494 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2024-11-13 14:17:26,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76646 conditions, 52829 events. 15875/52829 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 1484. Compared 708246 event pairs, 6167 based on Foata normal form. 0/49994 useless extension candidates. Maximal degree in co-relation 76639. Up to 13336 conditions per place. [2024-11-13 14:17:27,125 INFO L140 encePairwiseOnDemand]: 192/212 looper letters, 43 selfloop transitions, 16 changer transitions 0/222 dead transitions. [2024-11-13 14:17:27,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 222 transitions, 599 flow [2024-11-13 14:17:27,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:17:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2024-11-13 14:17:27,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8820754716981132 [2024-11-13 14:17:27,130 INFO L175 Difference]: Start difference. First operand has 201 places, 195 transitions, 412 flow. Second operand 3 states and 561 transitions. [2024-11-13 14:17:27,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 222 transitions, 599 flow [2024-11-13 14:17:27,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 222 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:27,137 INFO L231 Difference]: Finished difference. Result has 205 places, 211 transitions, 548 flow [2024-11-13 14:17:27,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=205, PETRI_TRANSITIONS=211} [2024-11-13 14:17:27,139 INFO L277 CegarLoopForPetriNet]: 212 programPoint places, -7 predicate places. [2024-11-13 14:17:27,139 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 211 transitions, 548 flow [2024-11-13 14:17:27,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 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 14:17:27,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:27,140 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:27,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:17:27,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-13 14:17:27,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1415359233, now seen corresponding path program 1 times [2024-11-13 14:17:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:27,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599690947] [2024-11-13 14:17:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:27,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:17:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:27,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:17:27,204 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:17:27,204 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-11-13 14:17:27,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-11-13 14:17:27,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-11-13 14:17:27,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-11-13 14:17:27,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:17:27,206 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 14:17:27,207 WARN L247 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 14:17:27,207 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-13 14:17:27,294 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 14:17:27,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 257 transitions, 554 flow [2024-11-13 14:17:27,360 INFO L124 PetriNetUnfolderBase]: 16/310 cut-off events. [2024-11-13 14:17:27,361 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 14:17:27,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 310 events. 16/310 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 943 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 267. Up to 12 conditions per place. [2024-11-13 14:17:27,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 257 transitions, 554 flow [2024-11-13 14:17:27,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 257 transitions, 554 flow [2024-11-13 14:17:27,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:17:27,372 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;@88a9cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:17:27,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-13 14:17:27,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:17:27,378 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-13 14:17:27,378 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-13 14:17:27,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:27,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:27,379 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-11-13 14:17:27,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1178234674, now seen corresponding path program 1 times [2024-11-13 14:17:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511287817] [2024-11-13 14:17:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:27,428 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 14:17:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511287817] [2024-11-13 14:17:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511287817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 14:17:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885948374] [2024-11-13 14:17:27,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:27,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:17:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:17:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:17:27,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 257 [2024-11-13 14:17:27,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 257 transitions, 554 flow. Second operand has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 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 14:17:27,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:27,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 257 [2024-11-13 14:17:27,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:17:36,865 INFO L124 PetriNetUnfolderBase]: 12349/51265 cut-off events. [2024-11-13 14:17:36,865 INFO L125 PetriNetUnfolderBase]: For 10801/10801 co-relation queries the response was YES. [2024-11-13 14:17:37,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71389 conditions, 51265 events. 12349/51265 cut-off events. For 10801/10801 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 719736 event pairs, 11720 based on Foata normal form. 6632/55521 useless extension candidates. Maximal degree in co-relation 53573. Up to 15626 conditions per place. [2024-11-13 14:17:38,085 INFO L140 encePairwiseOnDemand]: 240/257 looper letters, 25 selfloop transitions, 0 changer transitions 0/237 dead transitions. [2024-11-13 14:17:38,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 237 transitions, 564 flow [2024-11-13 14:17:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:17:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:17:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 472 transitions. [2024-11-13 14:17:38,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9182879377431906 [2024-11-13 14:17:38,088 INFO L175 Difference]: Start difference. First operand has 257 places, 257 transitions, 554 flow. Second operand 2 states and 472 transitions. [2024-11-13 14:17:38,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 237 transitions, 564 flow [2024-11-13 14:17:38,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 237 transitions, 552 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-13 14:17:38,104 INFO L231 Difference]: Finished difference. Result has 244 places, 237 transitions, 502 flow [2024-11-13 14:17:38,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=502, PETRI_PLACES=244, PETRI_TRANSITIONS=237} [2024-11-13 14:17:38,106 INFO L277 CegarLoopForPetriNet]: 257 programPoint places, -13 predicate places. [2024-11-13 14:17:38,107 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 237 transitions, 502 flow [2024-11-13 14:17:38,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 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 14:17:38,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:17:38,108 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] [2024-11-13 14:17:38,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:17:38,108 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2024-11-13 14:17:38,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1237677649, now seen corresponding path program 1 times [2024-11-13 14:17:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592692280] [2024-11-13 14:17:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:38,178 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 14:17:38,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592692280] [2024-11-13 14:17:38,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592692280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:38,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:38,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:17:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949721211] [2024-11-13 14:17:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:38,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:38,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:38,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 257 [2024-11-13 14:17:38,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 237 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 14:17:38,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:17:38,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 257 [2024-11-13 14:17:38,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand