./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:07:37,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:07:37,175 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-31 22:07:37,181 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:07:37,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:07:37,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:07:37,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:07:37,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:07:37,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:07:37,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:07:37,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:07:37,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:07:37,215 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:07:37,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:07:37,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:07:37,217 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:07:37,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:07:37,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:07:37,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:07:37,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:07:37,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:07:37,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:07:37,220 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-31 22:07:37,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:07:37,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:07:37,222 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:07:37,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:07:37,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:07:37,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:07:37,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:07:37,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:07:37,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:37,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:07:37,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:07:37,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:07:37,227 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:07:37,227 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:07:37,228 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:07:37,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:07:37,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:07:37,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:07:37,229 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2024-10-31 22:07:37,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:07:37,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:07:37,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:07:37,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:07:37,621 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:07:37,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i Unable to find full path for "g++" [2024-10-31 22:07:39,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:07:40,135 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:07:40,136 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2024-10-31 22:07:40,155 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/data/244b203f3/4bfb02398a1143f3b75d4bc3bad9d3b6/FLAGdfa0f284b [2024-10-31 22:07:40,365 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/data/244b203f3/4bfb02398a1143f3b75d4bc3bad9d3b6 [2024-10-31 22:07:40,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:07:40,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:07:40,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:40,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:07:40,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:07:40,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:40" (1/1) ... [2024-10-31 22:07:40,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72cb84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:40, skipping insertion in model container [2024-10-31 22:07:40,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:40" (1/1) ... [2024-10-31 22:07:40,427 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:07:40,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:41,007 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:07:41,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:41,154 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:07:41,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41 WrapperNode [2024-10-31 22:07:41,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:41,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:41,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:07:41,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:07:41,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,259 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 176 [2024-10-31 22:07:41,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:41,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:07:41,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:07:41,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:07:41,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,307 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:07:41,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:07:41,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:07:41,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:07:41,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (1/1) ... [2024-10-31 22:07:41,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:41,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:41,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d492226-a6ce-4e07-81d1-0435a149e1cf/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:07:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-31 22:07:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-31 22:07:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:07:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:07:41,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:07:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-31 22:07:41,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-31 22:07:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:07:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-10-31 22:07:41,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-31 22:07:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:07:41,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:07:41,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:07:41,415 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:07:41,642 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:07:41,645 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:07:42,247 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:07:42,247 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:07:42,314 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:07:42,315 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-31 22:07:42,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:42 BoogieIcfgContainer [2024-10-31 22:07:42,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:07:42,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:07:42,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:07:42,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:07:42,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:07:40" (1/3) ... [2024-10-31 22:07:42,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72925c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:42, skipping insertion in model container [2024-10-31 22:07:42,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:41" (2/3) ... [2024-10-31 22:07:42,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72925c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:42, skipping insertion in model container [2024-10-31 22:07:42,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:42" (3/3) ... [2024-10-31 22:07:42,325 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2024-10-31 22:07:42,343 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:07:42,343 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-31 22:07:42,343 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:07:42,427 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-31 22:07:42,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 273 transitions, 553 flow [2024-10-31 22:07:42,667 INFO L124 PetriNetUnfolderBase]: 53/413 cut-off events. [2024-10-31 22:07:42,668 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:07:42,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 413 events. 53/413 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1929 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 234. Up to 6 conditions per place. [2024-10-31 22:07:42,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 273 transitions, 553 flow [2024-10-31 22:07:42,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 273 transitions, 553 flow [2024-10-31 22:07:42,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:42,720 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;@1fc798e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:42,720 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-31 22:07:42,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:07:42,738 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2024-10-31 22:07:42,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:07:42,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:42,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:42,740 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:07:42,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:42,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1396948042, now seen corresponding path program 1 times [2024-10-31 22:07:42,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:42,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747889676] [2024-10-31 22:07:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:43,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747889676] [2024-10-31 22:07:43,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747889676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:43,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:43,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622069855] [2024-10-31 22:07:43,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:43,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:43,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:43,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 273 [2024-10-31 22:07:43,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 273 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:43,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:43,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 273 [2024-10-31 22:07:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:43,884 INFO L124 PetriNetUnfolderBase]: 229/1869 cut-off events. [2024-10-31 22:07:43,884 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-31 22:07:43,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 1869 events. 229/1869 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 12907 event pairs, 0 based on Foata normal form. 323/2009 useless extension candidates. Maximal degree in co-relation 2253. Up to 454 conditions per place. [2024-10-31 22:07:43,906 INFO L140 encePairwiseOnDemand]: 239/273 looper letters, 44 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2024-10-31 22:07:43,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 246 transitions, 591 flow [2024-10-31 22:07:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:07:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2024-10-31 22:07:43,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8583638583638583 [2024-10-31 22:07:43,934 INFO L175 Difference]: Start difference. First operand has 243 places, 273 transitions, 553 flow. Second operand 3 states and 703 transitions. [2024-10-31 22:07:43,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 246 transitions, 591 flow [2024-10-31 22:07:43,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 246 transitions, 591 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:07:43,951 INFO L231 Difference]: Finished difference. Result has 238 places, 234 transitions, 483 flow [2024-10-31 22:07:43,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=238, PETRI_TRANSITIONS=234} [2024-10-31 22:07:43,961 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -5 predicate places. [2024-10-31 22:07:43,961 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 234 transitions, 483 flow [2024-10-31 22:07:43,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:43,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:43,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:43,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:07:43,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:07:43,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash 853146814, now seen corresponding path program 1 times [2024-10-31 22:07:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24668430] [2024-10-31 22:07:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24668430] [2024-10-31 22:07:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24668430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:44,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:07:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002854224] [2024-10-31 22:07:44,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:44,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:07:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:07:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:07:45,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 273 [2024-10-31 22:07:45,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 234 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:45,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:45,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 273 [2024-10-31 22:07:45,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:45,894 INFO L124 PetriNetUnfolderBase]: 349/2118 cut-off events. [2024-10-31 22:07:45,894 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-31 22:07:45,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 2118 events. 349/2118 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 15403 event pairs, 13 based on Foata normal form. 0/1931 useless extension candidates. Maximal degree in co-relation 2801. Up to 587 conditions per place. [2024-10-31 22:07:45,914 INFO L140 encePairwiseOnDemand]: 267/273 looper letters, 88 selfloop transitions, 5 changer transitions 0/281 dead transitions. [2024-10-31 22:07:45,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 281 transitions, 763 flow [2024-10-31 22:07:45,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:07:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:07:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2024-10-31 22:07:45,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7606837606837606 [2024-10-31 22:07:45,926 INFO L175 Difference]: Start difference. First operand has 238 places, 234 transitions, 483 flow. Second operand 6 states and 1246 transitions. [2024-10-31 22:07:45,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 281 transitions, 763 flow [2024-10-31 22:07:45,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 281 transitions, 759 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:07:45,935 INFO L231 Difference]: Finished difference. Result has 240 places, 233 transitions, 487 flow [2024-10-31 22:07:45,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=240, PETRI_TRANSITIONS=233} [2024-10-31 22:07:45,940 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -3 predicate places. [2024-10-31 22:07:45,940 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 233 transitions, 487 flow [2024-10-31 22:07:45,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:45,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:45,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:45,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:07:45,943 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:07:45,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1690112521, now seen corresponding path program 1 times [2024-10-31 22:07:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096943478] [2024-10-31 22:07:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:45,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:46,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096943478] [2024-10-31 22:07:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096943478] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:46,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:46,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:07:46,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274613814] [2024-10-31 22:07:46,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:46,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:46,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:46,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 273 [2024-10-31 22:07:46,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 233 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:46,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:46,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 273 [2024-10-31 22:07:46,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:46,802 INFO L124 PetriNetUnfolderBase]: 596/3781 cut-off events. [2024-10-31 22:07:46,802 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:07:46,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 3781 events. 596/3781 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 32077 event pairs, 110 based on Foata normal form. 0/3422 useless extension candidates. Maximal degree in co-relation 4969. Up to 735 conditions per place. [2024-10-31 22:07:46,823 INFO L140 encePairwiseOnDemand]: 258/273 looper letters, 68 selfloop transitions, 10 changer transitions 0/266 dead transitions. [2024-10-31 22:07:46,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 266 transitions, 712 flow [2024-10-31 22:07:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:07:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2024-10-31 22:07:46,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8083028083028083 [2024-10-31 22:07:46,826 INFO L175 Difference]: Start difference. First operand has 240 places, 233 transitions, 487 flow. Second operand 3 states and 662 transitions. [2024-10-31 22:07:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 266 transitions, 712 flow [2024-10-31 22:07:46,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 266 transitions, 702 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-31 22:07:46,832 INFO L231 Difference]: Finished difference. Result has 237 places, 239 transitions, 551 flow [2024-10-31 22:07:46,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=551, PETRI_PLACES=237, PETRI_TRANSITIONS=239} [2024-10-31 22:07:46,833 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -6 predicate places. [2024-10-31 22:07:46,834 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 239 transitions, 551 flow [2024-10-31 22:07:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:46,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:46,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:46,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:07:46,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:07:46,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1606535005, now seen corresponding path program 1 times [2024-10-31 22:07:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173057568] [2024-10-31 22:07:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173057568] [2024-10-31 22:07:46,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173057568] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:46,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:07:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240083817] [2024-10-31 22:07:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:46,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:46,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 273 [2024-10-31 22:07:46,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 239 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:46,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:46,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 273 [2024-10-31 22:07:46,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:47,703 INFO L124 PetriNetUnfolderBase]: 592/3799 cut-off events. [2024-10-31 22:07:47,704 INFO L125 PetriNetUnfolderBase]: For 412/416 co-relation queries the response was YES. [2024-10-31 22:07:47,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5431 conditions, 3799 events. 592/3799 cut-off events. For 412/416 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 32118 event pairs, 409 based on Foata normal form. 4/3437 useless extension candidates. Maximal degree in co-relation 5361. Up to 1109 conditions per place. [2024-10-31 22:07:47,724 INFO L140 encePairwiseOnDemand]: 266/273 looper letters, 57 selfloop transitions, 8 changer transitions 0/260 dead transitions. [2024-10-31 22:07:47,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 260 transitions, 739 flow [2024-10-31 22:07:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:07:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2024-10-31 22:07:47,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.800976800976801 [2024-10-31 22:07:47,727 INFO L175 Difference]: Start difference. First operand has 237 places, 239 transitions, 551 flow. Second operand 3 states and 656 transitions. [2024-10-31 22:07:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 260 transitions, 739 flow [2024-10-31 22:07:47,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 260 transitions, 713 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:07:47,736 INFO L231 Difference]: Finished difference. Result has 239 places, 246 transitions, 603 flow [2024-10-31 22:07:47,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=603, PETRI_PLACES=239, PETRI_TRANSITIONS=246} [2024-10-31 22:07:47,739 INFO L277 CegarLoopForPetriNet]: 243 programPoint places, -4 predicate places. [2024-10-31 22:07:47,740 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 246 transitions, 603 flow [2024-10-31 22:07:47,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:47,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:47,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:47,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:07:47,742 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-31 22:07:47,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1881481615, now seen corresponding path program 1 times [2024-10-31 22:07:47,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:47,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899858272] [2024-10-31 22:07:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:47,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:47,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:07:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:07:47,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:07:47,818 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:07:47,820 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-31 22:07:47,821 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-31 22:07:47,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-31 22:07:47,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-31 22:07:47,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-31 22:07:47,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-31 22:07:47,823 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-31 22:07:47,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-31 22:07:47,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-31 22:07:47,824 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-31 22:07:47,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-31 22:07:47,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-31 22:07:47,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-31 22:07:47,825 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-31 22:07:47,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-31 22:07:47,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-31 22:07:47,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-31 22:07:47,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-31 22:07:47,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-31 22:07:47,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-31 22:07:47,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-31 22:07:47,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-31 22:07:47,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-31 22:07:47,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:07:47,828 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-31 22:07:47,831 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:07:47,831 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:07:47,884 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:07:47,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 366 transitions, 748 flow [2024-10-31 22:07:48,013 INFO L124 PetriNetUnfolderBase]: 88/674 cut-off events. [2024-10-31 22:07:48,013 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:07:48,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 674 events. 88/674 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3424 event pairs, 0 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 415. Up to 9 conditions per place. [2024-10-31 22:07:48,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 366 transitions, 748 flow [2024-10-31 22:07:48,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 366 transitions, 748 flow [2024-10-31 22:07:48,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:48,041 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;@1fc798e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:48,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-31 22:07:48,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:07:48,055 INFO L124 PetriNetUnfolderBase]: 2/61 cut-off events. [2024-10-31 22:07:48,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:07:48,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:48,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:48,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:07:48,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash -742247900, now seen corresponding path program 1 times [2024-10-31 22:07:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253877649] [2024-10-31 22:07:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:48,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:48,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253877649] [2024-10-31 22:07:48,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253877649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:48,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:48,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481448638] [2024-10-31 22:07:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:48,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:48,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 366 [2024-10-31 22:07:48,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 366 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:48,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:48,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 366 [2024-10-31 22:07:48,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:07:53,991 INFO L124 PetriNetUnfolderBase]: 6064/28771 cut-off events. [2024-10-31 22:07:53,992 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-31 22:07:54,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38370 conditions, 28771 events. 6064/28771 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 358509 event pairs, 5747 based on Foata normal form. 6265/32376 useless extension candidates. Maximal degree in co-relation 33103. Up to 9513 conditions per place. [2024-10-31 22:07:54,263 INFO L140 encePairwiseOnDemand]: 320/366 looper letters, 59 selfloop transitions, 2 changer transitions 0/328 dead transitions. [2024-10-31 22:07:54,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 328 transitions, 794 flow [2024-10-31 22:07:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:07:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2024-10-31 22:07:54,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8479052823315119 [2024-10-31 22:07:54,267 INFO L175 Difference]: Start difference. First operand has 325 places, 366 transitions, 748 flow. Second operand 3 states and 931 transitions. [2024-10-31 22:07:54,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 328 transitions, 794 flow [2024-10-31 22:07:54,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 328 transitions, 794 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:07:54,278 INFO L231 Difference]: Finished difference. Result has 320 places, 316 transitions, 658 flow [2024-10-31 22:07:54,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=320, PETRI_TRANSITIONS=316} [2024-10-31 22:07:54,281 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -5 predicate places. [2024-10-31 22:07:54,281 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 316 transitions, 658 flow [2024-10-31 22:07:54,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:54,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:07:54,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:54,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:07:54,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:07:54,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1340197524, now seen corresponding path program 1 times [2024-10-31 22:07:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:54,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111816737] [2024-10-31 22:07:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:54,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:54,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:54,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111816737] [2024-10-31 22:07:54,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111816737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:54,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:54,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:07:54,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190659591] [2024-10-31 22:07:54,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:54,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:07:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:07:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:07:55,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 366 [2024-10-31 22:07:55,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 316 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:55,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:07:55,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 366 [2024-10-31 22:07:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:08:01,090 INFO L124 PetriNetUnfolderBase]: 9520/33311 cut-off events. [2024-10-31 22:08:01,090 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-31 22:08:01,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48487 conditions, 33311 events. 9520/33311 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 400788 event pairs, 804 based on Foata normal form. 0/30737 useless extension candidates. Maximal degree in co-relation 3745. Up to 11851 conditions per place. [2024-10-31 22:08:01,424 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 150 selfloop transitions, 6 changer transitions 0/411 dead transitions. [2024-10-31 22:08:01,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 411 transitions, 1160 flow [2024-10-31 22:08:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:08:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:08:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2024-10-31 22:08:01,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7786885245901639 [2024-10-31 22:08:01,429 INFO L175 Difference]: Start difference. First operand has 320 places, 316 transitions, 658 flow. Second operand 6 states and 1710 transitions. [2024-10-31 22:08:01,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 411 transitions, 1160 flow [2024-10-31 22:08:01,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 411 transitions, 1158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:08:01,441 INFO L231 Difference]: Finished difference. Result has 323 places, 315 transitions, 666 flow [2024-10-31 22:08:01,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=666, PETRI_PLACES=323, PETRI_TRANSITIONS=315} [2024-10-31 22:08:01,443 INFO L277 CegarLoopForPetriNet]: 325 programPoint places, -2 predicate places. [2024-10-31 22:08:01,443 INFO L471 AbstractCegarLoop]: Abstraction has has 323 places, 315 transitions, 666 flow [2024-10-31 22:08:01,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:01,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:08:01,446 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:01,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:08:01,447 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-31 22:08:01,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1036572882, now seen corresponding path program 1 times [2024-10-31 22:08:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:01,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433181743] [2024-10-31 22:08:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:01,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433181743] [2024-10-31 22:08:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433181743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:01,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:01,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:08:01,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769349851] [2024-10-31 22:08:01,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:01,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:08:01,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:08:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:08:01,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 366 [2024-10-31 22:08:01,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 315 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:08:01,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:08:01,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 366 [2024-10-31 22:08:01,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand