./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 0e0057cc 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_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/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_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya --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 0.2.4-dev-0e0057c [2023-11-29 00:29:27,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:29:27,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-29 00:29:27,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:29:27,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:29:27,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:29:27,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:29:27,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:29:27,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:29:27,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:29:27,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:29:27,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:29:27,112 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:29:27,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:29:27,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:29:27,114 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:29:27,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:29:27,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:29:27,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:29:27,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:29:27,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:29:27,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:29:27,118 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-29 00:29:27,118 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:29:27,119 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:29:27,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:29:27,120 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:29:27,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:29:27,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:29:27,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:29:27,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:27,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:29:27,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:29:27,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:29:27,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:29:27,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:29:27,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:29:27,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:29:27,123 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:29:27,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:29:27,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:29:27,124 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_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 [2023-11-29 00:29:27,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:29:27,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:29:27,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:29:27,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:29:27,378 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:29:27,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-11-29 00:29:30,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:29:30,278 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:29:30,278 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/sv-benchmarks/c/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-11-29 00:29:30,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/data/453f5dc86/491af0dd98a7419ea814e8e2f47aec3d/FLAG40b9f49c5 [2023-11-29 00:29:30,302 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/data/453f5dc86/491af0dd98a7419ea814e8e2f47aec3d [2023-11-29 00:29:30,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:29:30,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:29:30,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:30,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:29:30,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:29:30,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39803d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30, skipping insertion in model container [2023-11-29 00:29:30,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:29:30,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:30,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:29:30,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:30,749 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:29:30,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30 WrapperNode [2023-11-29 00:29:30,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:30,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:30,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:29:30,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:29:30,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,796 INFO L138 Inliner]: procedures = 172, calls = 61, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 177 [2023-11-29 00:29:30,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:30,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:29:30,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:29:30,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:29:30,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:29:30,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:29:30,834 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:29:30,834 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:29:30,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (1/1) ... [2023-11-29 00:29:30,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:30,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:29:30,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7a048dc-8f9e-4634-ae69-a04c29093c00/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:29:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 00:29:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 00:29:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 00:29:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:29:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:29:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 00:29:30,894 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 00:29:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:29:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-11-29 00:29:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 00:29:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 00:29:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:29:30,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:29:30,896 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:29:31,032 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:29:31,034 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:29:31,348 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:29:31,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:29:31,400 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-29 00:29:31,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:31 BoogieIcfgContainer [2023-11-29 00:29:31,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:29:31,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:29:31,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:29:31,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:29:31,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:29:30" (1/3) ... [2023-11-29 00:29:31,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc0c8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:31, skipping insertion in model container [2023-11-29 00:29:31,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:30" (2/3) ... [2023-11-29 00:29:31,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc0c8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:31, skipping insertion in model container [2023-11-29 00:29:31,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:31" (3/3) ... [2023-11-29 00:29:31,410 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-11-29 00:29:31,418 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:29:31,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:29:31,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-29 00:29:31,426 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:29:31,517 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-29 00:29:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 273 transitions, 553 flow [2023-11-29 00:29:31,666 INFO L124 PetriNetUnfolderBase]: 53/410 cut-off events. [2023-11-29 00:29:31,666 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 00:29:31,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 410 events. 53/410 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2034 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 233. Up to 6 conditions per place. [2023-11-29 00:29:31,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 273 transitions, 553 flow [2023-11-29 00:29:31,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 273 transitions, 553 flow [2023-11-29 00:29:31,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:29:31,703 INFO L357 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, mHoare=true, 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;@77acdbfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:29:31,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-29 00:29:31,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:29:31,715 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-29 00:29:31,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:29:31,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:31,716 INFO L208 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] [2023-11-29 00:29:31,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 00:29:31,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash -874426731, now seen corresponding path program 1 times [2023-11-29 00:29:31,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:31,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590070468] [2023-11-29 00:29:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:32,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:32,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590070468] [2023-11-29 00:29:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590070468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:32,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:32,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:32,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905508668] [2023-11-29 00:29:32,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:32,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:32,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:32,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 273 [2023-11-29 00:29:32,074 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) [2023-11-29 00:29:32,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:32,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 273 [2023-11-29 00:29:32,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:32,479 INFO L124 PetriNetUnfolderBase]: 229/1774 cut-off events. [2023-11-29 00:29:32,479 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 00:29:32,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1774 events. 229/1774 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12092 event pairs, 0 based on Foata normal form. 323/1927 useless extension candidates. Maximal degree in co-relation 2164. Up to 454 conditions per place. [2023-11-29 00:29:32,493 INFO L140 encePairwiseOnDemand]: 239/273 looper letters, 44 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2023-11-29 00:29:32,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 242 transitions, 583 flow [2023-11-29 00:29:32,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-11-29 00:29:32,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8583638583638583 [2023-11-29 00:29:32,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-11-29 00:29:32,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-11-29 00:29:32,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:32,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-11-29 00:29:32,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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) [2023-11-29 00:29:32,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-29 00:29:32,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-29 00:29:32,530 INFO L175 Difference]: Start difference. First operand has 243 places, 273 transitions, 553 flow. Second operand 3 states and 703 transitions. [2023-11-29 00:29:32,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 242 transitions, 583 flow [2023-11-29 00:29:32,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 583 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:29:32,542 INFO L231 Difference]: Finished difference. Result has 234 places, 230 transitions, 475 flow [2023-11-29 00:29:32,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=475, PETRI_PLACES=234, PETRI_TRANSITIONS=230} [2023-11-29 00:29:32,547 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -9 predicate places. [2023-11-29 00:29:32,547 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 230 transitions, 475 flow [2023-11-29 00:29:32,548 INFO L496 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) [2023-11-29 00:29:32,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:32,548 INFO L208 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] [2023-11-29 00:29:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:29:32,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 00:29:32,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1794995134, now seen corresponding path program 1 times [2023-11-29 00:29:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183970346] [2023-11-29 00:29:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:32,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:32,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183970346] [2023-11-29 00:29:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183970346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:32,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145528572] [2023-11-29 00:29:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:32,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:32,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:32,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 273 [2023-11-29 00:29:32,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 230 transitions, 475 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) [2023-11-29 00:29:32,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:32,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 273 [2023-11-29 00:29:32,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:33,380 INFO L124 PetriNetUnfolderBase]: 596/3773 cut-off events. [2023-11-29 00:29:33,380 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:29:33,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 3773 events. 596/3773 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 31985 event pairs, 110 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 4971. Up to 735 conditions per place. [2023-11-29 00:29:33,403 INFO L140 encePairwiseOnDemand]: 258/273 looper letters, 68 selfloop transitions, 10 changer transitions 0/263 dead transitions. [2023-11-29 00:29:33,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 263 transitions, 700 flow [2023-11-29 00:29:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-11-29 00:29:33,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8083028083028083 [2023-11-29 00:29:33,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-11-29 00:29:33,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-11-29 00:29:33,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:33,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-11-29 00:29:33,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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) [2023-11-29 00:29:33,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-29 00:29:33,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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) [2023-11-29 00:29:33,413 INFO L175 Difference]: Start difference. First operand has 234 places, 230 transitions, 475 flow. Second operand 3 states and 662 transitions. [2023-11-29 00:29:33,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 263 transitions, 700 flow [2023-11-29 00:29:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 263 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:29:33,422 INFO L231 Difference]: Finished difference. Result has 234 places, 236 transitions, 545 flow [2023-11-29 00:29:33,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=234, PETRI_TRANSITIONS=236} [2023-11-29 00:29:33,423 INFO L281 CegarLoopForPetriNet]: 243 programPoint places, -9 predicate places. [2023-11-29 00:29:33,423 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 236 transitions, 545 flow [2023-11-29 00:29:33,424 INFO L496 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) [2023-11-29 00:29:33,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:33,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:33,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:29:33,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-29 00:29:33,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:33,426 INFO L85 PathProgramCache]: Analyzing trace with hash -970985994, now seen corresponding path program 1 times [2023-11-29 00:29:33,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:33,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577455233] [2023-11-29 00:29:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:33,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:29:33,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:29:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:29:33,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:29:33,523 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:29:33,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-29 00:29:33,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-29 00:29:33,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-29 00:29:33,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-29 00:29:33,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-29 00:29:33,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-29 00:29:33,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-29 00:29:33,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-29 00:29:33,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-29 00:29:33,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-29 00:29:33,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-29 00:29:33,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-29 00:29:33,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-29 00:29:33,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-29 00:29:33,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-29 00:29:33,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-29 00:29:33,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-29 00:29:33,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-29 00:29:33,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-29 00:29:33,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-29 00:29:33,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-29 00:29:33,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-29 00:29:33,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:29:33,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-29 00:29:33,533 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:29:33,534 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 00:29:33,581 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 00:29:33,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 366 transitions, 748 flow [2023-11-29 00:29:33,704 INFO L124 PetriNetUnfolderBase]: 88/672 cut-off events. [2023-11-29 00:29:33,704 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:29:33,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 672 events. 88/672 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3720 event pairs, 0 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 412. Up to 9 conditions per place. [2023-11-29 00:29:33,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 366 transitions, 748 flow [2023-11-29 00:29:33,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 366 transitions, 748 flow [2023-11-29 00:29:33,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:29:33,725 INFO L357 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, mHoare=true, 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;@77acdbfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:29:33,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-29 00:29:33,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:29:33,732 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-29 00:29:33,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:29:33,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:33,732 INFO L208 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] [2023-11-29 00:29:33,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-29 00:29:33,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash -219726589, now seen corresponding path program 1 times [2023-11-29 00:29:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495759189] [2023-11-29 00:29:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:33,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495759189] [2023-11-29 00:29:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495759189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867453714] [2023-11-29 00:29:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:33,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 366 [2023-11-29 00:29:33,814 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) [2023-11-29 00:29:33,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:33,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 366 [2023-11-29 00:29:33,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:38,283 INFO L124 PetriNetUnfolderBase]: 6064/28562 cut-off events. [2023-11-29 00:29:38,284 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-11-29 00:29:38,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38161 conditions, 28562 events. 6064/28562 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 357767 event pairs, 5482 based on Foata normal form. 6285/32292 useless extension candidates. Maximal degree in co-relation 2787. Up to 9513 conditions per place. [2023-11-29 00:29:38,430 INFO L140 encePairwiseOnDemand]: 320/366 looper letters, 59 selfloop transitions, 2 changer transitions 0/324 dead transitions. [2023-11-29 00:29:38,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 324 transitions, 786 flow [2023-11-29 00:29:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2023-11-29 00:29:38,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8479052823315119 [2023-11-29 00:29:38,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 931 transitions. [2023-11-29 00:29:38,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 931 transitions. [2023-11-29 00:29:38,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:38,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 931 transitions. [2023-11-29 00:29:38,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 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) [2023-11-29 00:29:38,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-29 00:29:38,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-29 00:29:38,440 INFO L175 Difference]: Start difference. First operand has 325 places, 366 transitions, 748 flow. Second operand 3 states and 931 transitions. [2023-11-29 00:29:38,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 324 transitions, 786 flow [2023-11-29 00:29:38,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 324 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:29:38,448 INFO L231 Difference]: Finished difference. Result has 316 places, 312 transitions, 650 flow [2023-11-29 00:29:38,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=316, PETRI_TRANSITIONS=312} [2023-11-29 00:29:38,450 INFO L281 CegarLoopForPetriNet]: 325 programPoint places, -9 predicate places. [2023-11-29 00:29:38,450 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 312 transitions, 650 flow [2023-11-29 00:29:38,451 INFO L496 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) [2023-11-29 00:29:38,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:38,452 INFO L208 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] [2023-11-29 00:29:38,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:29:38,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-29 00:29:38,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1352962595, now seen corresponding path program 1 times [2023-11-29 00:29:38,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:38,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480146355] [2023-11-29 00:29:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:38,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480146355] [2023-11-29 00:29:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480146355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396572890] [2023-11-29 00:29:38,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:38,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 366 [2023-11-29 00:29:38,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 312 transitions, 650 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) [2023-11-29 00:29:38,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:38,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 366 [2023-11-29 00:29:38,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:29:50,517 INFO L124 PetriNetUnfolderBase]: 30964/108732 cut-off events. [2023-11-29 00:29:50,517 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-11-29 00:29:50,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157252 conditions, 108732 events. 30964/108732 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 1548111 event pairs, 10119 based on Foata normal form. 0/97160 useless extension candidates. Maximal degree in co-relation 157198. Up to 26160 conditions per place. [2023-11-29 00:29:51,161 INFO L140 encePairwiseOnDemand]: 341/366 looper letters, 108 selfloop transitions, 18 changer transitions 0/371 dead transitions. [2023-11-29 00:29:51,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 371 transitions, 1031 flow [2023-11-29 00:29:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:29:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-11-29 00:29:51,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8096539162112932 [2023-11-29 00:29:51,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-11-29 00:29:51,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-11-29 00:29:51,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:29:51,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-11-29 00:29:51,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 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) [2023-11-29 00:29:51,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-29 00:29:51,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-29 00:29:51,176 INFO L175 Difference]: Start difference. First operand has 316 places, 312 transitions, 650 flow. Second operand 3 states and 889 transitions. [2023-11-29 00:29:51,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 371 transitions, 1031 flow [2023-11-29 00:29:51,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 371 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:29:51,184 INFO L231 Difference]: Finished difference. Result has 319 places, 330 transitions, 806 flow [2023-11-29 00:29:51,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=806, PETRI_PLACES=319, PETRI_TRANSITIONS=330} [2023-11-29 00:29:51,185 INFO L281 CegarLoopForPetriNet]: 325 programPoint places, -6 predicate places. [2023-11-29 00:29:51,185 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 330 transitions, 806 flow [2023-11-29 00:29:51,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-29 00:29:51,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:29:51,187 INFO L208 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] [2023-11-29 00:29:51,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:29:51,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-29 00:29:51,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:51,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1869401381, now seen corresponding path program 1 times [2023-11-29 00:29:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:51,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455625954] [2023-11-29 00:29:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:51,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:51,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:51,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455625954] [2023-11-29 00:29:51,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455625954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164497902] [2023-11-29 00:29:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:51,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:51,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 366 [2023-11-29 00:29:51,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 330 transitions, 806 flow. Second operand has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2023-11-29 00:29:51,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:29:51,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 366 [2023-11-29 00:29:51,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:30:05,669 INFO L124 PetriNetUnfolderBase]: 30330/121354 cut-off events. [2023-11-29 00:30:05,669 INFO L125 PetriNetUnfolderBase]: For 19664/20120 co-relation queries the response was YES. [2023-11-29 00:30:05,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188355 conditions, 121354 events. 30330/121354 cut-off events. For 19664/20120 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 1821277 event pairs, 21822 based on Foata normal form. 128/110234 useless extension candidates. Maximal degree in co-relation 182580. Up to 42647 conditions per place. [2023-11-29 00:30:06,416 INFO L140 encePairwiseOnDemand]: 355/366 looper letters, 94 selfloop transitions, 18 changer transitions 0/374 dead transitions. [2023-11-29 00:30:06,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 374 transitions, 1168 flow [2023-11-29 00:30:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:30:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:30:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-11-29 00:30:06,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.802367941712204 [2023-11-29 00:30:06,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-11-29 00:30:06,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-11-29 00:30:06,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:30:06,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-11-29 00:30:06,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 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) [2023-11-29 00:30:06,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-29 00:30:06,428 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 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) [2023-11-29 00:30:06,428 INFO L175 Difference]: Start difference. First operand has 319 places, 330 transitions, 806 flow. Second operand 3 states and 881 transitions. [2023-11-29 00:30:06,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 374 transitions, 1168 flow [2023-11-29 00:30:06,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 374 transitions, 1118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:30:06,479 INFO L231 Difference]: Finished difference. Result has 321 places, 346 transitions, 936 flow [2023-11-29 00:30:06,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=321, PETRI_TRANSITIONS=346} [2023-11-29 00:30:06,480 INFO L281 CegarLoopForPetriNet]: 325 programPoint places, -4 predicate places. [2023-11-29 00:30:06,480 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 346 transitions, 936 flow [2023-11-29 00:30:06,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 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) [2023-11-29 00:30:06,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:06,482 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 00:30:06,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:30:06,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-29 00:30:06,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:06,483 INFO L85 PathProgramCache]: Analyzing trace with hash -474522969, now seen corresponding path program 1 times [2023-11-29 00:30:06,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:06,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520044602] [2023-11-29 00:30:06,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:06,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:30:06,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:30:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:30:06,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:30:06,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:30:06,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2023-11-29 00:30:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-11-29 00:30:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-11-29 00:30:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-11-29 00:30:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-11-29 00:30:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-11-29 00:30:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-11-29 00:30:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-11-29 00:30:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-11-29 00:30:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-11-29 00:30:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-11-29 00:30:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-11-29 00:30:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-11-29 00:30:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-11-29 00:30:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-11-29 00:30:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-11-29 00:30:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-11-29 00:30:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-11-29 00:30:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2023-11-29 00:30:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2023-11-29 00:30:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-11-29 00:30:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-11-29 00:30:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-11-29 00:30:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-11-29 00:30:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-11-29 00:30:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-11-29 00:30:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-11-29 00:30:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-11-29 00:30:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-11-29 00:30:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-11-29 00:30:06,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:30:06,531 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 00:30:06,531 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:30:06,531 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 00:30:06,574 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:30:06,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 459 transitions, 945 flow [2023-11-29 00:30:06,708 INFO L124 PetriNetUnfolderBase]: 128/981 cut-off events. [2023-11-29 00:30:06,708 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-29 00:30:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 981 events. 128/981 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5657 event pairs, 1 based on Foata normal form. 0/801 useless extension candidates. Maximal degree in co-relation 680. Up to 16 conditions per place. [2023-11-29 00:30:06,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 459 transitions, 945 flow [2023-11-29 00:30:06,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 459 transitions, 945 flow [2023-11-29 00:30:06,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:30:06,729 INFO L357 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, mHoare=true, 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;@77acdbfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:30:06,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-29 00:30:06,734 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:30:06,734 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-29 00:30:06,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:30:06,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:30:06,735 INFO L208 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] [2023-11-29 00:30:06,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-29 00:30:06,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 390103886, now seen corresponding path program 1 times [2023-11-29 00:30:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150507086] [2023-11-29 00:30:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:30:06,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:06,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150507086] [2023-11-29 00:30:06,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150507086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:30:06,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:30:06,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:30:06,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598394690] [2023-11-29 00:30:06,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:06,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:30:06,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:06,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:30:06,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:30:06,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 459 [2023-11-29 00:30:06,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 459 transitions, 945 flow. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 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) [2023-11-29 00:30:06,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:30:06,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 459 [2023-11-29 00:30:06,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:31:10,542 INFO L124 PetriNetUnfolderBase]: 121463/422838 cut-off events. [2023-11-29 00:31:10,543 INFO L125 PetriNetUnfolderBase]: For 2932/2932 co-relation queries the response was YES. [2023-11-29 00:31:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591686 conditions, 422838 events. 121463/422838 cut-off events. For 2932/2932 co-relation queries the response was YES. Maximal size of possible extension queue 5371. Compared 7053580 event pairs, 78997 based on Foata normal form. 112206/499952 useless extension candidates. Maximal degree in co-relation 42680. Up to 167500 conditions per place. [2023-11-29 00:31:14,436 INFO L140 encePairwiseOnDemand]: 401/459 looper letters, 73 selfloop transitions, 2 changer transitions 0/405 dead transitions. [2023-11-29 00:31:14,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 405 transitions, 987 flow [2023-11-29 00:31:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:31:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:31:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1158 transitions. [2023-11-29 00:31:14,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.840958605664488 [2023-11-29 00:31:14,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1158 transitions. [2023-11-29 00:31:14,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1158 transitions. [2023-11-29 00:31:14,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:31:14,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1158 transitions. [2023-11-29 00:31:14,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 386.0) internal successors, (1158), 3 states have internal predecessors, (1158), 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) [2023-11-29 00:31:14,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 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) [2023-11-29 00:31:14,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 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) [2023-11-29 00:31:14,453 INFO L175 Difference]: Start difference. First operand has 407 places, 459 transitions, 945 flow. Second operand 3 states and 1158 transitions. [2023-11-29 00:31:14,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 405 transitions, 987 flow [2023-11-29 00:31:14,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 405 transitions, 987 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:31:14,462 INFO L231 Difference]: Finished difference. Result has 398 places, 393 transitions, 823 flow [2023-11-29 00:31:14,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=459, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=823, PETRI_PLACES=398, PETRI_TRANSITIONS=393} [2023-11-29 00:31:14,464 INFO L281 CegarLoopForPetriNet]: 407 programPoint places, -9 predicate places. [2023-11-29 00:31:14,464 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 393 transitions, 823 flow [2023-11-29 00:31:14,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 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) [2023-11-29 00:31:14,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:31:14,465 INFO L208 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] [2023-11-29 00:31:14,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:31:14,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 35 more)] === [2023-11-29 00:31:14,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:14,465 INFO L85 PathProgramCache]: Analyzing trace with hash -755446312, now seen corresponding path program 1 times [2023-11-29 00:31:14,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:14,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22038894] [2023-11-29 00:31:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:14,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:31:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22038894] [2023-11-29 00:31:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22038894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:31:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:31:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:31:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4670549] [2023-11-29 00:31:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:31:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:31:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:31:14,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 459 [2023-11-29 00:31:14,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 393 transitions, 823 flow. Second operand has 3 states, 3 states have (on average 312.6666666666667) internal successors, (938), 3 states have internal predecessors, (938), 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) [2023-11-29 00:31:14,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:31:14,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 459 [2023-11-29 00:31:14,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand