./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB --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 f225ad0ddd29038af28d51fbbac3525492e9437e240dca78f58919375937976a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:33:45,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:33:45,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-27 20:33:45,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:33:45,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:33:45,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:33:45,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:33:45,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:33:45,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:33:45,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:33:45,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:33:45,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:33:45,379 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:33:45,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:33:45,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:33:45,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:33:45,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:33:45,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:33:45,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:33:45,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:33:45,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:33:45,381 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:33:45,381 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:45,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:45,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:33:45,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:33:45,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:33:45,383 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_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB 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 -> f225ad0ddd29038af28d51fbbac3525492e9437e240dca78f58919375937976a [2024-11-27 20:33:45,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:33:45,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:33:45,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:33:45,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:33:45,769 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:33:45,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2024-11-27 20:33:49,078 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/data/fc0a80f85/de533950f31c412fb7dd9e1f9cfb7f24/FLAG90bcac0eb [2024-11-27 20:33:49,545 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:33:49,546 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/sv-benchmarks/c/pthread-ext/09_fmaxsym-race.i [2024-11-27 20:33:49,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/data/fc0a80f85/de533950f31c412fb7dd9e1f9cfb7f24/FLAG90bcac0eb [2024-11-27 20:33:49,579 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/data/fc0a80f85/de533950f31c412fb7dd9e1f9cfb7f24 [2024-11-27 20:33:49,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:33:49,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:33:49,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:33:49,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:33:49,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:33:49,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:33:49" (1/1) ... [2024-11-27 20:33:49,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372528bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:49, skipping insertion in model container [2024-11-27 20:33:49,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:33:49" (1/1) ... [2024-11-27 20:33:49,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:33:50,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:33:50,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:33:50,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:33:50,152 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:33:50,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50 WrapperNode [2024-11-27 20:33:50,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:33:50,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:33:50,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:33:50,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:33:50,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,201 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 103 [2024-11-27 20:33:50,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:33:50,202 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:33:50,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:33:50,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:33:50,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,224 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:33:50,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:33:50,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:33:50,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:33:50,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (1/1) ... [2024-11-27 20:33:50,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:50,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:33:50,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:33:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-27 20:33:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-27 20:33:50,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-27 20:33:50,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-27 20:33:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 20:33:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:33:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 20:33:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 20:33:50,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:33:50,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:33:50,327 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:33:50,478 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:33:50,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:33:50,763 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:33:50,764 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:33:50,798 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:33:50,801 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:33:50,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:50 BoogieIcfgContainer [2024-11-27 20:33:50,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:33:50,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:33:50,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:33:50,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:33:50,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:33:49" (1/3) ... [2024-11-27 20:33:50,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2303d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:33:50, skipping insertion in model container [2024-11-27 20:33:50,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:50" (2/3) ... [2024-11-27 20:33:50,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2303d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:33:50, skipping insertion in model container [2024-11-27 20:33:50,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:50" (3/3) ... [2024-11-27 20:33:50,815 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-race.i [2024-11-27 20:33:50,834 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:33:50,836 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym-race.i that has 2 procedures, 110 locations, 1 initial locations, 3 loop locations, and 5 error locations. [2024-11-27 20:33:50,836 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:33:50,962 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:33:51,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 119 transitions, 242 flow [2024-11-27 20:33:51,081 INFO L124 PetriNetUnfolderBase]: 10/127 cut-off events. [2024-11-27 20:33:51,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:33:51,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2024-11-27 20:33:51,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 119 transitions, 242 flow [2024-11-27 20:33:51,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 119 transitions, 242 flow [2024-11-27 20:33:51,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:33:51,134 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;@76175b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:33:51,134 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-27 20:33:51,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:33:51,162 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-27 20:33:51,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:33:51,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:51,165 INFO L206 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] [2024-11-27 20:33:51,166 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-27 20:33:51,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash 39819047, now seen corresponding path program 1 times [2024-11-27 20:33:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:51,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146606114] [2024-11-27 20:33:51,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:51,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146606114] [2024-11-27 20:33:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146606114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:52,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:33:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862211197] [2024-11-27 20:33:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:52,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:33:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:52,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:33:52,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:33:52,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 119 [2024-11-27 20:33:52,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 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) [2024-11-27 20:33:52,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:52,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 119 [2024-11-27 20:33:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:52,655 INFO L124 PetriNetUnfolderBase]: 3/109 cut-off events. [2024-11-27 20:33:52,655 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 20:33:52,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 3/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 13/113 useless extension candidates. Maximal degree in co-relation 69. Up to 14 conditions per place. [2024-11-27 20:33:52,658 INFO L140 encePairwiseOnDemand]: 106/119 looper letters, 13 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-27 20:33:52,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 252 flow [2024-11-27 20:33:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:33:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:33:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2024-11-27 20:33:52,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8011204481792717 [2024-11-27 20:33:52,680 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 242 flow. Second operand 6 states and 572 transitions. [2024-11-27 20:33:52,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 252 flow [2024-11-27 20:33:52,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 106 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:33:52,691 INFO L231 Difference]: Finished difference. Result has 111 places, 106 transitions, 226 flow [2024-11-27 20:33:52,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=106} [2024-11-27 20:33:52,701 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, -2 predicate places. [2024-11-27 20:33:52,701 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 106 transitions, 226 flow [2024-11-27 20:33:52,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 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) [2024-11-27 20:33:52,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:52,703 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:52,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:33:52,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-27 20:33:52,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1446894923, now seen corresponding path program 1 times [2024-11-27 20:33:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:52,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407647166] [2024-11-27 20:33:52,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407647166] [2024-11-27 20:33:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407647166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:52,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:52,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:33:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771150034] [2024-11-27 20:33:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:52,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:33:52,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:52,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:33:52,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:33:52,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 119 [2024-11-27 20:33:52,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 106 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-27 20:33:52,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:52,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 119 [2024-11-27 20:33:52,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:52,914 INFO L124 PetriNetUnfolderBase]: 3/121 cut-off events. [2024-11-27 20:33:52,914 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-27 20:33:52,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 121 events. 3/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 1/114 useless extension candidates. Maximal degree in co-relation 84. Up to 9 conditions per place. [2024-11-27 20:33:52,915 INFO L140 encePairwiseOnDemand]: 116/119 looper letters, 7 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-27 20:33:52,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 107 transitions, 248 flow [2024-11-27 20:33:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:33:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:33:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2024-11-27 20:33:52,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8851540616246498 [2024-11-27 20:33:52,920 INFO L175 Difference]: Start difference. First operand has 111 places, 106 transitions, 226 flow. Second operand 3 states and 316 transitions. [2024-11-27 20:33:52,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 107 transitions, 248 flow [2024-11-27 20:33:52,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 236 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:33:52,925 INFO L231 Difference]: Finished difference. Result has 109 places, 107 transitions, 228 flow [2024-11-27 20:33:52,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=109, PETRI_TRANSITIONS=107} [2024-11-27 20:33:52,927 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, -4 predicate places. [2024-11-27 20:33:52,927 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 107 transitions, 228 flow [2024-11-27 20:33:52,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2024-11-27 20:33:52,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:52,928 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:52,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:33:52,928 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-27 20:33:52,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:52,929 INFO L85 PathProgramCache]: Analyzing trace with hash -189095250, now seen corresponding path program 1 times [2024-11-27 20:33:52,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:52,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339856739] [2024-11-27 20:33:52,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:52,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339856739] [2024-11-27 20:33:53,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339856739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933915486] [2024-11-27 20:33:53,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:53,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:53,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:53,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:53,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:33:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:53,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:33:53,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:53,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:53,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933915486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:53,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:53,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 20:33:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400216087] [2024-11-27 20:33:53,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:53,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:33:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:53,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:33:53,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:33:53,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 119 [2024-11-27 20:33:53,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 228 flow. Second operand has 10 states, 10 states have (on average 100.9) internal successors, (1009), 10 states have internal predecessors, (1009), 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) [2024-11-27 20:33:53,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:53,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 119 [2024-11-27 20:33:53,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:53,696 INFO L124 PetriNetUnfolderBase]: 3/136 cut-off events. [2024-11-27 20:33:53,696 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:33:53,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 136 events. 3/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 119. Up to 9 conditions per place. [2024-11-27 20:33:53,698 INFO L140 encePairwiseOnDemand]: 113/119 looper letters, 11 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2024-11-27 20:33:53,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 286 flow [2024-11-27 20:33:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:33:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:33:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 913 transitions. [2024-11-27 20:33:53,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8524743230625583 [2024-11-27 20:33:53,702 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 228 flow. Second operand 9 states and 913 transitions. [2024-11-27 20:33:53,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 286 flow [2024-11-27 20:33:53,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:33:53,706 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 276 flow [2024-11-27 20:33:53,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=276, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2024-11-27 20:33:53,707 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, 6 predicate places. [2024-11-27 20:33:53,707 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 276 flow [2024-11-27 20:33:53,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 100.9) internal successors, (1009), 10 states have internal predecessors, (1009), 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) [2024-11-27 20:33:53,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:53,708 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:53,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:33:53,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:53,909 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-27 20:33:53,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1939540530, now seen corresponding path program 2 times [2024-11-27 20:33:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:53,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215430386] [2024-11-27 20:33:53,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:53,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:53,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:53,951 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:33:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215430386] [2024-11-27 20:33:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215430386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784199318] [2024-11-27 20:33:54,189 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:54,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:54,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:33:54,322 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:54,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:54,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:33:54,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:33:54,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:33:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784199318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:54,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:54,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-27 20:33:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348842279] [2024-11-27 20:33:54,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:54,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:33:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:54,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:33:54,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:33:54,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 119 [2024-11-27 20:33:54,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 276 flow. Second operand has 15 states, 15 states have (on average 101.06666666666666) internal successors, (1516), 15 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:54,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:54,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 119 [2024-11-27 20:33:54,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:55,131 INFO L124 PetriNetUnfolderBase]: 3/175 cut-off events. [2024-11-27 20:33:55,131 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-27 20:33:55,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 175 events. 3/175 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 3/170 useless extension candidates. Maximal degree in co-relation 185. Up to 9 conditions per place. [2024-11-27 20:33:55,133 INFO L140 encePairwiseOnDemand]: 113/119 looper letters, 14 selfloop transitions, 18 changer transitions 0/127 dead transitions. [2024-11-27 20:33:55,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 414 flow [2024-11-27 20:33:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:33:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:33:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1817 transitions. [2024-11-27 20:33:55,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8482726423902894 [2024-11-27 20:33:55,139 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 276 flow. Second operand 18 states and 1817 transitions. [2024-11-27 20:33:55,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 414 flow [2024-11-27 20:33:55,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 127 transitions, 402 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-27 20:33:55,144 INFO L231 Difference]: Finished difference. Result has 139 places, 123 transitions, 376 flow [2024-11-27 20:33:55,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=376, PETRI_PLACES=139, PETRI_TRANSITIONS=123} [2024-11-27 20:33:55,145 INFO L279 CegarLoopForPetriNet]: 113 programPoint places, 26 predicate places. [2024-11-27 20:33:55,145 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 123 transitions, 376 flow [2024-11-27 20:33:55,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 101.06666666666666) internal successors, (1516), 15 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:55,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:55,146 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:55,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:33:55,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:55,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-27 20:33:55,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1421533205, now seen corresponding path program 3 times [2024-11-27 20:33:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:55,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200961266] [2024-11-27 20:33:55,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:55,495 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:33:55,495 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:33:55,495 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:33:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:33:55,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:33:55,582 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:33:55,583 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-27 20:33:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-27 20:33:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-27 20:33:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-27 20:33:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-27 20:33:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-27 20:33:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-27 20:33:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-27 20:33:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-27 20:33:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-27 20:33:55,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:33:55,587 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-27 20:33:55,594 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 20:33:55,594 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 20:33:55,659 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:33:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 184 transitions, 378 flow [2024-11-27 20:33:55,714 INFO L124 PetriNetUnfolderBase]: 17/202 cut-off events. [2024-11-27 20:33:55,714 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:33:55,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 202 events. 17/202 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 380 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 138. Up to 6 conditions per place. [2024-11-27 20:33:55,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 184 transitions, 378 flow [2024-11-27 20:33:55,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 184 transitions, 378 flow [2024-11-27 20:33:55,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:33:55,723 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;@76175b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:33:55,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-27 20:33:55,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:33:55,731 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-27 20:33:55,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:33:55,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:55,731 INFO L206 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] [2024-11-27 20:33:55,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-27 20:33:55,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:55,733 INFO L85 PathProgramCache]: Analyzing trace with hash -310578977, now seen corresponding path program 1 times [2024-11-27 20:33:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:55,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219802700] [2024-11-27 20:33:55,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:56,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:56,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219802700] [2024-11-27 20:33:56,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219802700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:56,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:33:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056216473] [2024-11-27 20:33:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:56,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:33:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:56,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:33:56,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:33:56,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 184 [2024-11-27 20:33:56,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 184 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2024-11-27 20:33:56,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:56,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 184 [2024-11-27 20:33:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:56,605 INFO L124 PetriNetUnfolderBase]: 68/565 cut-off events. [2024-11-27 20:33:56,605 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-27 20:33:56,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 565 events. 68/565 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2627 event pairs, 42 based on Foata normal form. 108/584 useless extension candidates. Maximal degree in co-relation 461. Up to 117 conditions per place. [2024-11-27 20:33:56,611 INFO L140 encePairwiseOnDemand]: 167/184 looper letters, 20 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2024-11-27 20:33:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 165 transitions, 390 flow [2024-11-27 20:33:56,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:33:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:33:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 901 transitions. [2024-11-27 20:33:56,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8161231884057971 [2024-11-27 20:33:56,614 INFO L175 Difference]: Start difference. First operand has 174 places, 184 transitions, 378 flow. Second operand 6 states and 901 transitions. [2024-11-27 20:33:56,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 165 transitions, 390 flow [2024-11-27 20:33:56,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 390 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:33:56,618 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 350 flow [2024-11-27 20:33:56,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2024-11-27 20:33:56,619 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, -4 predicate places. [2024-11-27 20:33:56,619 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 350 flow [2024-11-27 20:33:56,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2024-11-27 20:33:56,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:56,620 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:56,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:33:56,621 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-27 20:33:56,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1551050314, now seen corresponding path program 1 times [2024-11-27 20:33:56,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334488473] [2024-11-27 20:33:56,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:56,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:56,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:56,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334488473] [2024-11-27 20:33:56,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334488473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:56,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:33:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115593576] [2024-11-27 20:33:56,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:56,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:33:56,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:56,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:33:56,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:33:56,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 184 [2024-11-27 20:33:56,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2024-11-27 20:33:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 184 [2024-11-27 20:33:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:56,756 INFO L124 PetriNetUnfolderBase]: 15/321 cut-off events. [2024-11-27 20:33:56,756 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-27 20:33:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 321 events. 15/321 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 893 event pairs, 6 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 308. Up to 24 conditions per place. [2024-11-27 20:33:56,759 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 10 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2024-11-27 20:33:56,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 166 transitions, 378 flow [2024-11-27 20:33:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:33:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:33:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2024-11-27 20:33:56,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8876811594202898 [2024-11-27 20:33:56,761 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 350 flow. Second operand 3 states and 490 transitions. [2024-11-27 20:33:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 166 transitions, 378 flow [2024-11-27 20:33:56,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 166 transitions, 366 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:33:56,765 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 352 flow [2024-11-27 20:33:56,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=168, PETRI_TRANSITIONS=166} [2024-11-27 20:33:56,766 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, -6 predicate places. [2024-11-27 20:33:56,767 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 352 flow [2024-11-27 20:33:56,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2024-11-27 20:33:56,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:56,767 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:56,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:33:56,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-27 20:33:56,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash 957909905, now seen corresponding path program 1 times [2024-11-27 20:33:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964303186] [2024-11-27 20:33:56,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:56,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:56,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964303186] [2024-11-27 20:33:56,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964303186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:56,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641890715] [2024-11-27 20:33:56,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:56,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:56,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:56,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:56,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:33:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:56,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:33:56,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:57,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:57,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641890715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:57,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:57,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 20:33:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685155010] [2024-11-27 20:33:57,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:57,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:33:57,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:57,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:33:57,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:33:57,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 184 [2024-11-27 20:33:57,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 352 flow. Second operand has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 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) [2024-11-27 20:33:57,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:57,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 184 [2024-11-27 20:33:57,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:57,340 INFO L124 PetriNetUnfolderBase]: 15/336 cut-off events. [2024-11-27 20:33:57,340 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-27 20:33:57,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 336 events. 15/336 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 864 event pairs, 6 based on Foata normal form. 2/305 useless extension candidates. Maximal degree in co-relation 343. Up to 24 conditions per place. [2024-11-27 20:33:57,342 INFO L140 encePairwiseOnDemand]: 178/184 looper letters, 14 selfloop transitions, 9 changer transitions 0/174 dead transitions. [2024-11-27 20:33:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 174 transitions, 416 flow [2024-11-27 20:33:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:33:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:33:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1429 transitions. [2024-11-27 20:33:57,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8629227053140096 [2024-11-27 20:33:57,346 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 352 flow. Second operand 9 states and 1429 transitions. [2024-11-27 20:33:57,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 174 transitions, 416 flow [2024-11-27 20:33:57,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 174 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:33:57,350 INFO L231 Difference]: Finished difference. Result has 178 places, 172 transitions, 400 flow [2024-11-27 20:33:57,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=400, PETRI_PLACES=178, PETRI_TRANSITIONS=172} [2024-11-27 20:33:57,351 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 4 predicate places. [2024-11-27 20:33:57,351 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 172 transitions, 400 flow [2024-11-27 20:33:57,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 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) [2024-11-27 20:33:57,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:57,352 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:57,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:33:57,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:33:57,557 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-27 20:33:57,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1363786673, now seen corresponding path program 2 times [2024-11-27 20:33:57,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:57,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814276126] [2024-11-27 20:33:57,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:57,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:57,592 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:57,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:57,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814276126] [2024-11-27 20:33:57,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814276126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:57,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185175356] [2024-11-27 20:33:57,824 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:57,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:57,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:57,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:33:57,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:57,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:57,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:33:57,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:58,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:58,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185175356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:58,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:58,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-27 20:33:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646441249] [2024-11-27 20:33:58,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:58,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:33:58,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:58,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:33:58,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:33:58,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 184 [2024-11-27 20:33:58,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 172 transitions, 400 flow. Second operand has 15 states, 15 states have (on average 158.13333333333333) internal successors, (2372), 15 states have internal predecessors, (2372), 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) [2024-11-27 20:33:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:58,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 184 [2024-11-27 20:33:58,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:58,579 INFO L124 PetriNetUnfolderBase]: 15/375 cut-off events. [2024-11-27 20:33:58,580 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-27 20:33:58,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 375 events. 15/375 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 864 event pairs, 6 based on Foata normal form. 3/345 useless extension candidates. Maximal degree in co-relation 305. Up to 24 conditions per place. [2024-11-27 20:33:58,582 INFO L140 encePairwiseOnDemand]: 178/184 looper letters, 17 selfloop transitions, 18 changer transitions 0/186 dead transitions. [2024-11-27 20:33:58,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 186 transitions, 544 flow [2024-11-27 20:33:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:33:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:33:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2846 transitions. [2024-11-27 20:33:58,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8592995169082126 [2024-11-27 20:33:58,589 INFO L175 Difference]: Start difference. First operand has 178 places, 172 transitions, 400 flow. Second operand 18 states and 2846 transitions. [2024-11-27 20:33:58,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 186 transitions, 544 flow [2024-11-27 20:33:58,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 186 transitions, 532 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-27 20:33:58,594 INFO L231 Difference]: Finished difference. Result has 198 places, 182 transitions, 500 flow [2024-11-27 20:33:58,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=500, PETRI_PLACES=198, PETRI_TRANSITIONS=182} [2024-11-27 20:33:58,595 INFO L279 CegarLoopForPetriNet]: 174 programPoint places, 24 predicate places. [2024-11-27 20:33:58,595 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 182 transitions, 500 flow [2024-11-27 20:33:58,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 158.13333333333333) internal successors, (2372), 15 states have internal predecessors, (2372), 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) [2024-11-27 20:33:58,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:58,596 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:33:58,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:33:58,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-27 20:33:58,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-27 20:33:58,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1558387370, now seen corresponding path program 3 times [2024-11-27 20:33:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:58,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191563368] [2024-11-27 20:33:58,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:58,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-27 20:33:58,868 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:33:58,868 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:33:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:33:58,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:33:58,915 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-27 20:33:58,916 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-27 20:33:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-27 20:33:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-27 20:33:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-27 20:33:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-27 20:33:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-27 20:33:58,917 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-27 20:33:58,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:33:58,917 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-27 20:33:58,918 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 20:33:58,918 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-27 20:33:58,961 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:33:58,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 249 transitions, 516 flow [2024-11-27 20:33:59,026 INFO L124 PetriNetUnfolderBase]: 24/277 cut-off events. [2024-11-27 20:33:59,026 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-27 20:33:59,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 24/277 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 709 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2024-11-27 20:33:59,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 249 transitions, 516 flow [2024-11-27 20:33:59,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 249 transitions, 516 flow [2024-11-27 20:33:59,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:33:59,032 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;@76175b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:33:59,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-27 20:33:59,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:33:59,037 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-27 20:33:59,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:33:59,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:59,037 INFO L206 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] [2024-11-27 20:33:59,037 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-27 20:33:59,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -14465864, now seen corresponding path program 1 times [2024-11-27 20:33:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474055476] [2024-11-27 20:33:59,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:59,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:59,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474055476] [2024-11-27 20:33:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474055476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:59,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:59,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:33:59,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328676811] [2024-11-27 20:33:59,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:59,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:33:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:59,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:33:59,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:33:59,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 249 [2024-11-27 20:33:59,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 249 transitions, 516 flow. Second operand has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 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) [2024-11-27 20:33:59,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:59,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 249 [2024-11-27 20:33:59,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:00,337 INFO L124 PetriNetUnfolderBase]: 870/4011 cut-off events. [2024-11-27 20:34:00,337 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-11-27 20:34:00,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 4011 events. 870/4011 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 36507 event pairs, 630 based on Foata normal form. 961/4240 useless extension candidates. Maximal degree in co-relation 3233. Up to 1191 conditions per place. [2024-11-27 20:34:00,382 INFO L140 encePairwiseOnDemand]: 228/249 looper letters, 27 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2024-11-27 20:34:00,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 224 transitions, 530 flow [2024-11-27 20:34:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1230 transitions. [2024-11-27 20:34:00,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8232931726907631 [2024-11-27 20:34:00,386 INFO L175 Difference]: Start difference. First operand has 235 places, 249 transitions, 516 flow. Second operand 6 states and 1230 transitions. [2024-11-27 20:34:00,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 224 transitions, 530 flow [2024-11-27 20:34:00,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 224 transitions, 528 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-27 20:34:00,390 INFO L231 Difference]: Finished difference. Result has 229 places, 224 transitions, 474 flow [2024-11-27 20:34:00,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=229, PETRI_TRANSITIONS=224} [2024-11-27 20:34:00,392 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, -6 predicate places. [2024-11-27 20:34:00,392 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 224 transitions, 474 flow [2024-11-27 20:34:00,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 198.5) internal successors, (1191), 6 states have internal predecessors, (1191), 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) [2024-11-27 20:34:00,393 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:00,393 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:00,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:34:00,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-27 20:34:00,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1874314558, now seen corresponding path program 1 times [2024-11-27 20:34:00,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:00,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624373966] [2024-11-27 20:34:00,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:00,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624373966] [2024-11-27 20:34:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624373966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:00,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:00,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819445855] [2024-11-27 20:34:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:00,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:00,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:00,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:00,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 249 [2024-11-27 20:34:00,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 224 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2024-11-27 20:34:00,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:00,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 249 [2024-11-27 20:34:00,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:00,654 INFO L124 PetriNetUnfolderBase]: 69/939 cut-off events. [2024-11-27 20:34:00,654 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-27 20:34:00,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 939 events. 69/939 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5299 event pairs, 42 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 1016. Up to 87 conditions per place. [2024-11-27 20:34:00,667 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 13 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2024-11-27 20:34:00,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 225 transitions, 508 flow [2024-11-27 20:34:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:34:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2024-11-27 20:34:00,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-11-27 20:34:00,669 INFO L175 Difference]: Start difference. First operand has 229 places, 224 transitions, 474 flow. Second operand 3 states and 664 transitions. [2024-11-27 20:34:00,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 225 transitions, 508 flow [2024-11-27 20:34:00,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 225 transitions, 496 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:00,675 INFO L231 Difference]: Finished difference. Result has 227 places, 225 transitions, 476 flow [2024-11-27 20:34:00,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=227, PETRI_TRANSITIONS=225} [2024-11-27 20:34:00,678 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, -8 predicate places. [2024-11-27 20:34:00,679 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 225 transitions, 476 flow [2024-11-27 20:34:00,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2024-11-27 20:34:00,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:00,680 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:00,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:34:00,680 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-27 20:34:00,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1660366250, now seen corresponding path program 1 times [2024-11-27 20:34:00,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:00,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378270051] [2024-11-27 20:34:00,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:00,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378270051] [2024-11-27 20:34:00,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378270051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:00,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058263623] [2024-11-27 20:34:00,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:00,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:00,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:00,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:00,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:34:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:00,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:34:00,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:00,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058263623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:00,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:00,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 20:34:00,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465060396] [2024-11-27 20:34:00,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:00,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:34:00,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:00,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:34:00,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:34:01,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 249 [2024-11-27 20:34:01,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 225 transitions, 476 flow. Second operand has 10 states, 10 states have (on average 215.1) internal successors, (2151), 10 states have internal predecessors, (2151), 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) [2024-11-27 20:34:01,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:01,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 249 [2024-11-27 20:34:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:01,336 INFO L124 PetriNetUnfolderBase]: 69/954 cut-off events. [2024-11-27 20:34:01,336 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-27 20:34:01,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 954 events. 69/954 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5274 event pairs, 42 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 1051. Up to 87 conditions per place. [2024-11-27 20:34:01,345 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 17 selfloop transitions, 9 changer transitions 0/233 dead transitions. [2024-11-27 20:34:01,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 233 transitions, 546 flow [2024-11-27 20:34:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:34:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:34:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1945 transitions. [2024-11-27 20:34:01,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8679161088799643 [2024-11-27 20:34:01,351 INFO L175 Difference]: Start difference. First operand has 227 places, 225 transitions, 476 flow. Second operand 9 states and 1945 transitions. [2024-11-27 20:34:01,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 233 transitions, 546 flow [2024-11-27 20:34:01,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 233 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:01,356 INFO L231 Difference]: Finished difference. Result has 237 places, 231 transitions, 524 flow [2024-11-27 20:34:01,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=524, PETRI_PLACES=237, PETRI_TRANSITIONS=231} [2024-11-27 20:34:01,358 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, 2 predicate places. [2024-11-27 20:34:01,358 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 231 transitions, 524 flow [2024-11-27 20:34:01,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 215.1) internal successors, (2151), 10 states have internal predecessors, (2151), 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) [2024-11-27 20:34:01,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:01,360 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:01,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:01,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:34:01,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-27 20:34:01,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1055764950, now seen corresponding path program 2 times [2024-11-27 20:34:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874753116] [2024-11-27 20:34:01,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:01,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:01,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:01,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874753116] [2024-11-27 20:34:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874753116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810095190] [2024-11-27 20:34:01,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:01,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:01,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:01,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:01,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:34:01,892 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:01,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:01,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:34:01,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:01,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810095190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:02,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-27 20:34:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341718923] [2024-11-27 20:34:02,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:02,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:34:02,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:02,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:34:02,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:34:02,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 249 [2024-11-27 20:34:02,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 231 transitions, 524 flow. Second operand has 15 states, 15 states have (on average 215.2) internal successors, (3228), 15 states have internal predecessors, (3228), 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) [2024-11-27 20:34:02,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:02,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 249 [2024-11-27 20:34:02,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:02,665 INFO L124 PetriNetUnfolderBase]: 69/993 cut-off events. [2024-11-27 20:34:02,665 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-27 20:34:02,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 993 events. 69/993 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5274 event pairs, 42 based on Foata normal form. 3/887 useless extension candidates. Maximal degree in co-relation 1013. Up to 87 conditions per place. [2024-11-27 20:34:02,676 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 20 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-11-27 20:34:02,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 245 transitions, 674 flow [2024-11-27 20:34:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:34:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:34:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3875 transitions. [2024-11-27 20:34:02,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8645693886657743 [2024-11-27 20:34:02,685 INFO L175 Difference]: Start difference. First operand has 237 places, 231 transitions, 524 flow. Second operand 18 states and 3875 transitions. [2024-11-27 20:34:02,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 245 transitions, 674 flow [2024-11-27 20:34:02,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 245 transitions, 662 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:02,690 INFO L231 Difference]: Finished difference. Result has 257 places, 241 transitions, 624 flow [2024-11-27 20:34:02,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=624, PETRI_PLACES=257, PETRI_TRANSITIONS=241} [2024-11-27 20:34:02,691 INFO L279 CegarLoopForPetriNet]: 235 programPoint places, 22 predicate places. [2024-11-27 20:34:02,691 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 241 transitions, 624 flow [2024-11-27 20:34:02,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 215.2) internal successors, (3228), 15 states have internal predecessors, (3228), 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) [2024-11-27 20:34:02,693 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:02,693 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:02,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:34:02,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:34:02,894 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-27 20:34:02,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:02,895 INFO L85 PathProgramCache]: Analyzing trace with hash -906548158, now seen corresponding path program 3 times [2024-11-27 20:34:02,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:02,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084051661] [2024-11-27 20:34:02,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:02,955 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-27 20:34:02,956 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:34:02,956 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:34:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:34:02,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:34:02,988 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-27 20:34:02,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-27 20:34:02,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-27 20:34:02,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-27 20:34:02,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-27 20:34:02,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-27 20:34:02,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:34:02,991 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-27 20:34:02,992 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 20:34:02,992 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-27 20:34:03,042 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:34:03,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 314 transitions, 656 flow [2024-11-27 20:34:03,097 INFO L124 PetriNetUnfolderBase]: 31/352 cut-off events. [2024-11-27 20:34:03,097 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-27 20:34:03,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 352 events. 31/352 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1093 event pairs, 0 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 285. Up to 10 conditions per place. [2024-11-27 20:34:03,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 314 transitions, 656 flow [2024-11-27 20:34:03,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 314 transitions, 656 flow [2024-11-27 20:34:03,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:34:03,107 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;@76175b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:34:03,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-27 20:34:03,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:34:03,111 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-27 20:34:03,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:34:03,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:03,111 INFO L206 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] [2024-11-27 20:34:03,112 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-27 20:34:03,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash 928158386, now seen corresponding path program 1 times [2024-11-27 20:34:03,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:03,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180217022] [2024-11-27 20:34:03,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:03,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:03,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:03,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180217022] [2024-11-27 20:34:03,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180217022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:03,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150197400] [2024-11-27 20:34:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:03,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:03,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:03,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:03,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 314 [2024-11-27 20:34:03,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 314 transitions, 656 flow. Second operand has 6 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 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) [2024-11-27 20:34:03,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:03,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 314 [2024-11-27 20:34:03,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:09,189 INFO L124 PetriNetUnfolderBase]: 8893/30356 cut-off events. [2024-11-27 20:34:09,189 INFO L125 PetriNetUnfolderBase]: For 3794/3794 co-relation queries the response was YES. [2024-11-27 20:34:09,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43430 conditions, 30356 events. 8893/30356 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 380065 event pairs, 6804 based on Foata normal form. 8459/33329 useless extension candidates. Maximal degree in co-relation 22385. Up to 11130 conditions per place. [2024-11-27 20:34:09,583 INFO L140 encePairwiseOnDemand]: 289/314 looper letters, 34 selfloop transitions, 5 changer transitions 0/283 dead transitions. [2024-11-27 20:34:09,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 283 transitions, 672 flow [2024-11-27 20:34:09,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1559 transitions. [2024-11-27 20:34:09,587 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8274946921443737 [2024-11-27 20:34:09,587 INFO L175 Difference]: Start difference. First operand has 296 places, 314 transitions, 656 flow. Second operand 6 states and 1559 transitions. [2024-11-27 20:34:09,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 283 transitions, 672 flow [2024-11-27 20:34:09,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 283 transitions, 666 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-27 20:34:09,597 INFO L231 Difference]: Finished difference. Result has 288 places, 283 transitions, 598 flow [2024-11-27 20:34:09,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=598, PETRI_PLACES=288, PETRI_TRANSITIONS=283} [2024-11-27 20:34:09,602 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, -8 predicate places. [2024-11-27 20:34:09,602 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 283 transitions, 598 flow [2024-11-27 20:34:09,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 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) [2024-11-27 20:34:09,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:09,603 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:09,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:34:09,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-27 20:34:09,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash -573430577, now seen corresponding path program 1 times [2024-11-27 20:34:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:09,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542012428] [2024-11-27 20:34:09,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:09,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:09,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542012428] [2024-11-27 20:34:09,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542012428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:09,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:34:09,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372308720] [2024-11-27 20:34:09,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:09,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:34:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:09,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:34:09,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:34:09,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 314 [2024-11-27 20:34:09,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 283 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2024-11-27 20:34:09,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:09,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 314 [2024-11-27 20:34:09,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:10,362 INFO L124 PetriNetUnfolderBase]: 285/2847 cut-off events. [2024-11-27 20:34:10,362 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-27 20:34:10,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 2847 events. 285/2847 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23879 event pairs, 204 based on Foata normal form. 1/2510 useless extension candidates. Maximal degree in co-relation 3248. Up to 330 conditions per place. [2024-11-27 20:34:10,404 INFO L140 encePairwiseOnDemand]: 311/314 looper letters, 16 selfloop transitions, 2 changer transitions 0/284 dead transitions. [2024-11-27 20:34:10,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 284 transitions, 638 flow [2024-11-27 20:34:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:34:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:34:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2024-11-27 20:34:10,406 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8895966029723992 [2024-11-27 20:34:10,407 INFO L175 Difference]: Start difference. First operand has 288 places, 283 transitions, 598 flow. Second operand 3 states and 838 transitions. [2024-11-27 20:34:10,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 284 transitions, 638 flow [2024-11-27 20:34:10,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 284 transitions, 626 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 20:34:10,412 INFO L231 Difference]: Finished difference. Result has 286 places, 284 transitions, 600 flow [2024-11-27 20:34:10,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=286, PETRI_TRANSITIONS=284} [2024-11-27 20:34:10,414 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, -10 predicate places. [2024-11-27 20:34:10,415 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 284 transitions, 600 flow [2024-11-27 20:34:10,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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) [2024-11-27 20:34:10,415 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:10,416 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:10,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:34:10,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-27 20:34:10,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash -604898019, now seen corresponding path program 1 times [2024-11-27 20:34:10,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:10,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435516361] [2024-11-27 20:34:10,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:10,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435516361] [2024-11-27 20:34:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435516361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022911625] [2024-11-27 20:34:10,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:10,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:10,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:10,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:34:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:10,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:34:10,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:10,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:10,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022911625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:10,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:10,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-27 20:34:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425672238] [2024-11-27 20:34:10,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:10,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:34:10,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:10,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:34:10,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:34:10,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 314 [2024-11-27 20:34:10,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 284 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 272.2) internal successors, (2722), 10 states have internal predecessors, (2722), 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) [2024-11-27 20:34:10,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:10,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 314 [2024-11-27 20:34:10,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:11,477 INFO L124 PetriNetUnfolderBase]: 285/2862 cut-off events. [2024-11-27 20:34:11,477 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-27 20:34:11,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 2862 events. 285/2862 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23915 event pairs, 204 based on Foata normal form. 2/2526 useless extension candidates. Maximal degree in co-relation 3283. Up to 330 conditions per place. [2024-11-27 20:34:11,508 INFO L140 encePairwiseOnDemand]: 308/314 looper letters, 20 selfloop transitions, 9 changer transitions 0/292 dead transitions. [2024-11-27 20:34:11,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 292 transitions, 676 flow [2024-11-27 20:34:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:34:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 20:34:11,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2461 transitions. [2024-11-27 20:34:11,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8708421797593772 [2024-11-27 20:34:11,514 INFO L175 Difference]: Start difference. First operand has 286 places, 284 transitions, 600 flow. Second operand 9 states and 2461 transitions. [2024-11-27 20:34:11,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 292 transitions, 676 flow [2024-11-27 20:34:11,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 292 transitions, 674 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:11,522 INFO L231 Difference]: Finished difference. Result has 296 places, 290 transitions, 648 flow [2024-11-27 20:34:11,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=648, PETRI_PLACES=296, PETRI_TRANSITIONS=290} [2024-11-27 20:34:11,523 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, 0 predicate places. [2024-11-27 20:34:11,523 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 290 transitions, 648 flow [2024-11-27 20:34:11,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.2) internal successors, (2722), 10 states have internal predecessors, (2722), 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) [2024-11-27 20:34:11,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:11,525 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:11,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:11,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:34:11,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-27 20:34:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1578731101, now seen corresponding path program 2 times [2024-11-27 20:34:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640664943] [2024-11-27 20:34:11,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:11,764 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:11,765 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:34:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:11,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640664943] [2024-11-27 20:34:11,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640664943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:11,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342786191] [2024-11-27 20:34:11,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:11,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:11,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:11,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:11,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:34:12,186 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:34:12,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:12,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:34:12,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:34:12,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 20:34:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342786191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:12,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:12,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-27 20:34:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671801993] [2024-11-27 20:34:12,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:12,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:34:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:12,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:34:12,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:34:12,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 314 [2024-11-27 20:34:12,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 290 transitions, 648 flow. Second operand has 15 states, 15 states have (on average 272.26666666666665) internal successors, (4084), 15 states have internal predecessors, (4084), 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) [2024-11-27 20:34:12,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:12,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 314 [2024-11-27 20:34:12,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:13,722 INFO L124 PetriNetUnfolderBase]: 285/2901 cut-off events. [2024-11-27 20:34:13,722 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-11-27 20:34:13,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3429 conditions, 2901 events. 285/2901 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 23940 event pairs, 204 based on Foata normal form. 3/2566 useless extension candidates. Maximal degree in co-relation 3245. Up to 330 conditions per place. [2024-11-27 20:34:13,758 INFO L140 encePairwiseOnDemand]: 308/314 looper letters, 23 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-11-27 20:34:13,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 304 transitions, 804 flow [2024-11-27 20:34:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:34:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-27 20:34:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4904 transitions. [2024-11-27 20:34:13,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.867657466383581 [2024-11-27 20:34:13,766 INFO L175 Difference]: Start difference. First operand has 296 places, 290 transitions, 648 flow. Second operand 18 states and 4904 transitions. [2024-11-27 20:34:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 304 transitions, 804 flow [2024-11-27 20:34:13,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 304 transitions, 792 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:13,774 INFO L231 Difference]: Finished difference. Result has 316 places, 300 transitions, 748 flow [2024-11-27 20:34:13,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=748, PETRI_PLACES=316, PETRI_TRANSITIONS=300} [2024-11-27 20:34:13,775 INFO L279 CegarLoopForPetriNet]: 296 programPoint places, 20 predicate places. [2024-11-27 20:34:13,776 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 300 transitions, 748 flow [2024-11-27 20:34:13,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 272.26666666666665) internal successors, (4084), 15 states have internal predecessors, (4084), 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) [2024-11-27 20:34:13,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:13,778 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:34:13,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:34:13,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_658b5b48-40f7-4a65-b601-ecb197a0d214/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:13,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-27 20:34:13,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1456644367, now seen corresponding path program 3 times [2024-11-27 20:34:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:13,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028667109] [2024-11-27 20:34:13,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:13,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:14,053 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-27 20:34:14,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-27 20:34:14,053 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:34:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:34:14,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:34:14,103 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:34:14,103 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-27 20:34:14,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-27 20:34:14,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-27 20:34:14,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-27 20:34:14,103 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-27 20:34:14,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-27 20:34:14,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-27 20:34:14,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:34:14,106 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-27 20:34:14,106 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 20:34:14,107 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-27 20:34:14,185 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 20:34:14,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 379 transitions, 798 flow [2024-11-27 20:34:14,291 INFO L124 PetriNetUnfolderBase]: 38/427 cut-off events. [2024-11-27 20:34:14,292 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-27 20:34:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 427 events. 38/427 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1485 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 365. Up to 12 conditions per place. [2024-11-27 20:34:14,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 379 transitions, 798 flow [2024-11-27 20:34:14,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 379 transitions, 798 flow [2024-11-27 20:34:14,305 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:34:14,305 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;@76175b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:34:14,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-27 20:34:14,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:34:14,312 INFO L124 PetriNetUnfolderBase]: 3/55 cut-off events. [2024-11-27 20:34:14,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:34:14,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:14,312 INFO L206 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] [2024-11-27 20:34:14,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-27 20:34:14,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1777673523, now seen corresponding path program 1 times [2024-11-27 20:34:14,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:14,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108164456] [2024-11-27 20:34:14,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:14,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:14,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108164456] [2024-11-27 20:34:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108164456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:14,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:14,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:14,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115365123] [2024-11-27 20:34:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:14,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:14,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:14,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:14,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:14,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 379 [2024-11-27 20:34:14,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 379 transitions, 798 flow. Second operand has 6 states, 6 states have (on average 304.5) internal successors, (1827), 6 states have internal predecessors, (1827), 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) [2024-11-27 20:34:14,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:14,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 379 [2024-11-27 20:34:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand