./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_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_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/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_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/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_1b00f8de-fdb8-4035-8189-783918d1a005/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 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:58:59,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:58:59,818 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-28 23:58:59,823 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:58:59,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:58:59,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:58:59,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:58:59,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:58:59,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:58:59,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:58:59,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:58:59,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:58:59,852 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:58:59,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:58:59,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:58:59,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:58:59,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:58:59,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:58:59,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:58:59,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:58:59,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:58:59,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:58:59,857 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-28 23:58:59,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:58:59,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:58:59,858 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:58:59,858 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:58:59,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:58:59,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:58:59,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:58:59,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:58:59,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:58:59,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:58:59,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:58:59,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:58:59,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:58:59,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:58:59,862 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:58:59,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:58:59,863 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:58:59,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:58:59,863 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_1b00f8de-fdb8-4035-8189-783918d1a005/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ac894f5c6207d1329786eb676509b79ca36f8c33f880cc59ffa30652ab92765 [2023-11-28 23:59:00,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:59:00,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:59:00,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:59:00,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:59:00,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:59:00,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-28 23:59:02,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:59:03,208 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:59:03,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/sv-benchmarks/c/goblint-regression/28-race_reach_82-list_racefree.i [2023-11-28 23:59:03,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/data/4ec91b28e/dd0a217502604414adbfe9a90ffbac1a/FLAG11717de01 [2023-11-28 23:59:03,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/data/4ec91b28e/dd0a217502604414adbfe9a90ffbac1a [2023-11-28 23:59:03,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:59:03,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:59:03,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:59:03,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:59:03,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:59:03,253 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:03,254 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750a3ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03, skipping insertion in model container [2023-11-28 23:59:03,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:03,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:59:03,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:59:03,825 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:59:03,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:59:03,959 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:59:03,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03 WrapperNode [2023-11-28 23:59:03,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:59:03,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:59:03,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:59:03,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:59:03,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:03,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,027 INFO L138 Inliner]: procedures = 279, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 338 [2023-11-28 23:59:04,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:59:04,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:59:04,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:59:04,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:59:04,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:59:04,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:59:04,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:59:04,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:59:04,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (1/1) ... [2023-11-28 23:59:04,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:59:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:59:04,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:59:04,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b00f8de-fdb8-4035-8189-783918d1a005/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:59:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:59:04,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-28 23:59:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-28 23:59:04,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-28 23:59:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:59:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 23:59:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 23:59:04,167 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-28 23:59:04,168 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-28 23:59:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 23:59:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 23:59:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 23:59:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:59:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-28 23:59:04,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-28 23:59:04,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:59:04,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:59:04,170 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:59:04,336 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:59:04,338 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:59:04,825 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:59:04,854 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:59:04,854 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-28 23:59:04,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:59:04 BoogieIcfgContainer [2023-11-28 23:59:04,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:59:04,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:59:04,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:59:04,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:59:04,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:59:03" (1/3) ... [2023-11-28 23:59:04,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71072de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:59:04, skipping insertion in model container [2023-11-28 23:59:04,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:59:03" (2/3) ... [2023-11-28 23:59:04,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71072de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:59:04, skipping insertion in model container [2023-11-28 23:59:04,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:59:04" (3/3) ... [2023-11-28 23:59:04,865 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_82-list_racefree.i [2023-11-28 23:59:04,874 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:59:04,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:59:04,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-28 23:59:04,885 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:59:05,021 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-28 23:59:05,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 359 transitions, 738 flow [2023-11-28 23:59:05,286 INFO L124 PetriNetUnfolderBase]: 54/662 cut-off events. [2023-11-28 23:59:05,286 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-28 23:59:05,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 662 events. 54/662 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3079 event pairs, 0 based on Foata normal form. 0/566 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2023-11-28 23:59:05,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 359 transitions, 738 flow [2023-11-28 23:59:05,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 359 transitions, 738 flow [2023-11-28 23:59:05,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:59:05,331 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;@5a17acbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:59:05,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-28 23:59:05,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:59:05,338 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-11-28 23:59:05,338 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:59:05,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:05,339 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] [2023-11-28 23:59:05,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-28 23:59:05,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1967941126, now seen corresponding path program 1 times [2023-11-28 23:59:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:05,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865462023] [2023-11-28 23:59:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:05,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865462023] [2023-11-28 23:59:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865462023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:05,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:05,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:59:05,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922787939] [2023-11-28 23:59:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:05,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:05,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:59:05,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 359 [2023-11-28 23:59:05,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 359 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 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) [2023-11-28 23:59:05,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:05,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 359 [2023-11-28 23:59:05,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:06,283 INFO L124 PetriNetUnfolderBase]: 210/2357 cut-off events. [2023-11-28 23:59:06,283 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-11-28 23:59:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745 conditions, 2357 events. 210/2357 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 18298 event pairs, 158 based on Foata normal form. 306/2439 useless extension candidates. Maximal degree in co-relation 1868. Up to 333 conditions per place. [2023-11-28 23:59:06,314 INFO L140 encePairwiseOnDemand]: 339/359 looper letters, 25 selfloop transitions, 2 changer transitions 0/338 dead transitions. [2023-11-28 23:59:06,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 338 transitions, 750 flow [2023-11-28 23:59:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:59:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:59:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 984 transitions. [2023-11-28 23:59:06,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9136490250696379 [2023-11-28 23:59:06,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 984 transitions. [2023-11-28 23:59:06,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 984 transitions. [2023-11-28 23:59:06,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:06,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 984 transitions. [2023-11-28 23:59:06,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2023-11-28 23:59:06,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-11-28 23:59:06,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-11-28 23:59:06,358 INFO L175 Difference]: Start difference. First operand has 340 places, 359 transitions, 738 flow. Second operand 3 states and 984 transitions. [2023-11-28 23:59:06,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 338 transitions, 750 flow [2023-11-28 23:59:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 750 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:59:06,375 INFO L231 Difference]: Finished difference. Result has 338 places, 338 transitions, 700 flow [2023-11-28 23:59:06,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=700, PETRI_PLACES=338, PETRI_TRANSITIONS=338} [2023-11-28 23:59:06,381 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -2 predicate places. [2023-11-28 23:59:06,382 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 338 transitions, 700 flow [2023-11-28 23:59:06,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 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) [2023-11-28 23:59:06,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:06,383 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] [2023-11-28 23:59:06,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:59:06,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-28 23:59:06,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1952316851, now seen corresponding path program 1 times [2023-11-28 23:59:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:06,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922014900] [2023-11-28 23:59:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:06,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:06,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922014900] [2023-11-28 23:59:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922014900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:06,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:06,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:59:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132509301] [2023-11-28 23:59:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:06,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:06,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:06,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:59:06,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 359 [2023-11-28 23:59:06,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 338 transitions, 700 flow. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 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) [2023-11-28 23:59:06,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:06,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 359 [2023-11-28 23:59:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:07,007 INFO L124 PetriNetUnfolderBase]: 118/1982 cut-off events. [2023-11-28 23:59:07,007 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-11-28 23:59:07,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 1982 events. 118/1982 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13024 event pairs, 84 based on Foata normal form. 0/1796 useless extension candidates. Maximal degree in co-relation 2216. Up to 213 conditions per place. [2023-11-28 23:59:07,031 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 24 selfloop transitions, 1 changer transitions 0/335 dead transitions. [2023-11-28 23:59:07,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 335 transitions, 744 flow [2023-11-28 23:59:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:59:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:59:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2023-11-28 23:59:07,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8978644382544104 [2023-11-28 23:59:07,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2023-11-28 23:59:07,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2023-11-28 23:59:07,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:07,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2023-11-28 23:59:07,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 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) [2023-11-28 23:59:07,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-11-28 23:59:07,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-11-28 23:59:07,045 INFO L175 Difference]: Start difference. First operand has 338 places, 338 transitions, 700 flow. Second operand 3 states and 967 transitions. [2023-11-28 23:59:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 335 transitions, 744 flow [2023-11-28 23:59:07,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 335 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-28 23:59:07,054 INFO L231 Difference]: Finished difference. Result has 335 places, 335 transitions, 692 flow [2023-11-28 23:59:07,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=692, PETRI_PLACES=335, PETRI_TRANSITIONS=335} [2023-11-28 23:59:07,056 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -5 predicate places. [2023-11-28 23:59:07,056 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 335 transitions, 692 flow [2023-11-28 23:59:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 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) [2023-11-28 23:59:07,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:07,058 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] [2023-11-28 23:59:07,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:59:07,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-28 23:59:07,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash 861740957, now seen corresponding path program 1 times [2023-11-28 23:59:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704761977] [2023-11-28 23:59:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:07,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:07,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704761977] [2023-11-28 23:59:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704761977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:59:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315757126] [2023-11-28 23:59:07,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:59:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:59:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:59:07,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 359 [2023-11-28 23:59:07,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 335 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 257.3333333333333) internal successors, (1544), 6 states have internal predecessors, (1544), 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) [2023-11-28 23:59:07,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:07,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 359 [2023-11-28 23:59:07,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:13,950 INFO L124 PetriNetUnfolderBase]: 15993/43540 cut-off events. [2023-11-28 23:59:13,950 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2023-11-28 23:59:14,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68149 conditions, 43540 events. 15993/43540 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 495167 event pairs, 15314 based on Foata normal form. 0/40543 useless extension candidates. Maximal degree in co-relation 68105. Up to 24421 conditions per place. [2023-11-28 23:59:14,187 INFO L140 encePairwiseOnDemand]: 353/359 looper letters, 79 selfloop transitions, 5 changer transitions 0/334 dead transitions. [2023-11-28 23:59:14,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 334 transitions, 858 flow [2023-11-28 23:59:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:59:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:59:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2023-11-28 23:59:14,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525533890436398 [2023-11-28 23:59:14,191 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1621 transitions. [2023-11-28 23:59:14,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1621 transitions. [2023-11-28 23:59:14,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:14,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1621 transitions. [2023-11-28 23:59:14,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.1666666666667) internal successors, (1621), 6 states have internal predecessors, (1621), 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) [2023-11-28 23:59:14,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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) [2023-11-28 23:59:14,201 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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) [2023-11-28 23:59:14,201 INFO L175 Difference]: Start difference. First operand has 335 places, 335 transitions, 692 flow. Second operand 6 states and 1621 transitions. [2023-11-28 23:59:14,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 334 transitions, 858 flow [2023-11-28 23:59:14,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 334 transitions, 857 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:59:14,208 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 699 flow [2023-11-28 23:59:14,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=699, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2023-11-28 23:59:14,210 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -2 predicate places. [2023-11-28 23:59:14,210 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 699 flow [2023-11-28 23:59:14,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.3333333333333) internal successors, (1544), 6 states have internal predecessors, (1544), 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) [2023-11-28 23:59:14,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:14,211 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, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:14,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:59:14,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-28 23:59:14,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:14,212 INFO L85 PathProgramCache]: Analyzing trace with hash 61188159, now seen corresponding path program 1 times [2023-11-28 23:59:14,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:14,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850684415] [2023-11-28 23:59:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:14,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850684415] [2023-11-28 23:59:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850684415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:14,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:14,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:59:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422083937] [2023-11-28 23:59:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:14,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:59:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:59:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:59:14,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 359 [2023-11-28 23:59:14,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 699 flow. Second operand has 6 states, 6 states have (on average 257.3333333333333) internal successors, (1544), 6 states have internal predecessors, (1544), 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) [2023-11-28 23:59:14,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:14,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 359 [2023-11-28 23:59:14,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:20,446 INFO L124 PetriNetUnfolderBase]: 15983/43152 cut-off events. [2023-11-28 23:59:20,446 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2023-11-28 23:59:20,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67792 conditions, 43152 events. 15983/43152 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 488485 event pairs, 15314 based on Foata normal form. 0/40187 useless extension candidates. Maximal degree in co-relation 67748. Up to 24447 conditions per place. [2023-11-28 23:59:20,653 INFO L140 encePairwiseOnDemand]: 353/359 looper letters, 79 selfloop transitions, 5 changer transitions 0/333 dead transitions. [2023-11-28 23:59:20,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 333 transitions, 865 flow [2023-11-28 23:59:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:59:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:59:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2023-11-28 23:59:20,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7525533890436398 [2023-11-28 23:59:20,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1621 transitions. [2023-11-28 23:59:20,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1621 transitions. [2023-11-28 23:59:20,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:20,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1621 transitions. [2023-11-28 23:59:20,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.1666666666667) internal successors, (1621), 6 states have internal predecessors, (1621), 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) [2023-11-28 23:59:20,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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) [2023-11-28 23:59:20,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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) [2023-11-28 23:59:20,669 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 699 flow. Second operand 6 states and 1621 transitions. [2023-11-28 23:59:20,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 333 transitions, 865 flow [2023-11-28 23:59:20,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 333 transitions, 855 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:59:20,678 INFO L231 Difference]: Finished difference. Result has 337 places, 333 transitions, 697 flow [2023-11-28 23:59:20,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=697, PETRI_PLACES=337, PETRI_TRANSITIONS=333} [2023-11-28 23:59:20,680 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -3 predicate places. [2023-11-28 23:59:20,680 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 333 transitions, 697 flow [2023-11-28 23:59:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.3333333333333) internal successors, (1544), 6 states have internal predecessors, (1544), 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) [2023-11-28 23:59:20,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:20,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:20,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:59:20,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-28 23:59:20,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:20,683 INFO L85 PathProgramCache]: Analyzing trace with hash 886442032, now seen corresponding path program 1 times [2023-11-28 23:59:20,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:20,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818544982] [2023-11-28 23:59:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:20,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818544982] [2023-11-28 23:59:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818544982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:20,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:20,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:59:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833517803] [2023-11-28 23:59:20,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:20,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:59:20,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 359 [2023-11-28 23:59:20,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 333 transitions, 697 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 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) [2023-11-28 23:59:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 359 [2023-11-28 23:59:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:59:21,253 INFO L124 PetriNetUnfolderBase]: 153/1810 cut-off events. [2023-11-28 23:59:21,254 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-28 23:59:21,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 1810 events. 153/1810 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12960 event pairs, 114 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 2059. Up to 240 conditions per place. [2023-11-28 23:59:21,265 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 24 selfloop transitions, 2 changer transitions 0/335 dead transitions. [2023-11-28 23:59:21,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 335 transitions, 753 flow [2023-11-28 23:59:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:59:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:59:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2023-11-28 23:59:21,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9080779944289693 [2023-11-28 23:59:21,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2023-11-28 23:59:21,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2023-11-28 23:59:21,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:59:21,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2023-11-28 23:59:21,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2023-11-28 23:59:21,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-11-28 23:59:21,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-11-28 23:59:21,277 INFO L175 Difference]: Start difference. First operand has 337 places, 333 transitions, 697 flow. Second operand 3 states and 978 transitions. [2023-11-28 23:59:21,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 335 transitions, 753 flow [2023-11-28 23:59:21,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 335 transitions, 743 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-28 23:59:21,286 INFO L231 Difference]: Finished difference. Result has 335 places, 333 transitions, 695 flow [2023-11-28 23:59:21,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=695, PETRI_PLACES=335, PETRI_TRANSITIONS=333} [2023-11-28 23:59:21,287 INFO L281 CegarLoopForPetriNet]: 340 programPoint places, -5 predicate places. [2023-11-28 23:59:21,288 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 333 transitions, 695 flow [2023-11-28 23:59:21,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 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) [2023-11-28 23:59:21,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:21,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:59:21,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:59:21,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-11-28 23:59:21,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -742190216, now seen corresponding path program 1 times [2023-11-28 23:59:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963667848] [2023-11-28 23:59:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:21,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:59:21,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:59:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:59:21,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:59:21,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:59:21,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-28 23:59:21,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-28 23:59:21,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-28 23:59:21,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-28 23:59:21,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-28 23:59:21,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-28 23:59:21,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-28 23:59:21,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-28 23:59:21,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-28 23:59:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-28 23:59:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-28 23:59:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-28 23:59:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-28 23:59:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-28 23:59:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-28 23:59:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 36 remaining) [2023-11-28 23:59:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-28 23:59:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-28 23:59:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-28 23:59:21,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-28 23:59:21,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-28 23:59:21,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-28 23:59:21,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-28 23:59:21,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-28 23:59:21,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-28 23:59:21,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-28 23:59:21,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-28 23:59:21,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-28 23:59:21,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-28 23:59:21,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-28 23:59:21,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:59:21,385 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-28 23:59:21,388 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:59:21,388 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-28 23:59:21,509 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-28 23:59:21,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 549 places, 584 transitions, 1212 flow [2023-11-28 23:59:21,978 INFO L124 PetriNetUnfolderBase]: 197/1935 cut-off events. [2023-11-28 23:59:21,978 INFO L125 PetriNetUnfolderBase]: For 72/93 co-relation queries the response was YES. [2023-11-28 23:59:22,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 1935 events. 197/1935 cut-off events. For 72/93 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13635 event pairs, 1 based on Foata normal form. 0/1638 useless extension candidates. Maximal degree in co-relation 1197. Up to 32 conditions per place. [2023-11-28 23:59:22,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 549 places, 584 transitions, 1212 flow [2023-11-28 23:59:22,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 549 places, 584 transitions, 1212 flow [2023-11-28 23:59:22,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:59:22,045 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;@5a17acbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:59:22,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-11-28 23:59:22,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:59:22,047 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-11-28 23:59:22,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:59:22,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:59:22,047 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] [2023-11-28 23:59:22,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-28 23:59:22,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:59:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1068834944, now seen corresponding path program 1 times [2023-11-28 23:59:22,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:59:22,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025677729] [2023-11-28 23:59:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:59:22,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:59:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:59:22,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:59:22,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:59:22,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025677729] [2023-11-28 23:59:22,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025677729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:59:22,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:59:22,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:59:22,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717174623] [2023-11-28 23:59:22,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:59:22,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:59:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:59:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:59:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:59:22,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 504 out of 584 [2023-11-28 23:59:22,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 584 transitions, 1212 flow. Second operand has 3 states, 3 states have (on average 505.3333333333333) internal successors, (1516), 3 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:59:22,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:59:22,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 504 of 584 [2023-11-28 23:59:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:01,043 INFO L124 PetriNetUnfolderBase]: 32332/168077 cut-off events. [2023-11-29 00:00:01,043 INFO L125 PetriNetUnfolderBase]: For 14903/14903 co-relation queries the response was YES. [2023-11-29 00:00:03,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214125 conditions, 168077 events. 32332/168077 cut-off events. For 14903/14903 co-relation queries the response was YES. Maximal size of possible extension queue 2883. Compared 2850925 event pairs, 28344 based on Foata normal form. 28002/181897 useless extension candidates. Maximal degree in co-relation 64793. Up to 40533 conditions per place. [2023-11-29 00:00:04,016 INFO L140 encePairwiseOnDemand]: 551/584 looper letters, 45 selfloop transitions, 2 changer transitions 0/547 dead transitions. [2023-11-29 00:00:04,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 547 transitions, 1232 flow [2023-11-29 00:00:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:00:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:00:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1590 transitions. [2023-11-29 00:00:04,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9075342465753424 [2023-11-29 00:00:04,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1590 transitions. [2023-11-29 00:00:04,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1590 transitions. [2023-11-29 00:00:04,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:04,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1590 transitions. [2023-11-29 00:00:04,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 530.0) internal successors, (1590), 3 states have internal predecessors, (1590), 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 00:00:04,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 00:00:04,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 00:00:04,035 INFO L175 Difference]: Start difference. First operand has 549 places, 584 transitions, 1212 flow. Second operand 3 states and 1590 transitions. [2023-11-29 00:00:04,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 547 transitions, 1232 flow [2023-11-29 00:00:04,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 547 transitions, 1232 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:00:04,054 INFO L231 Difference]: Finished difference. Result has 544 places, 547 transitions, 1142 flow [2023-11-29 00:00:04,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1142, PETRI_PLACES=544, PETRI_TRANSITIONS=547} [2023-11-29 00:00:04,055 INFO L281 CegarLoopForPetriNet]: 549 programPoint places, -5 predicate places. [2023-11-29 00:00:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 547 transitions, 1142 flow [2023-11-29 00:00:04,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 505.3333333333333) internal successors, (1516), 3 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:00:04,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:04,056 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] [2023-11-29 00:00:04,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:00:04,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-29 00:00:04,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash -616795719, now seen corresponding path program 1 times [2023-11-29 00:00:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609352361] [2023-11-29 00:00:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:04,084 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 00:00:04,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:04,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609352361] [2023-11-29 00:00:04,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609352361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:04,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:04,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:00:04,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192015599] [2023-11-29 00:00:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:00:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:00:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:00:04,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 584 [2023-11-29 00:00:04,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 547 transitions, 1142 flow. Second operand has 3 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 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 00:00:04,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:04,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 584 [2023-11-29 00:00:04,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:00:48,174 INFO L124 PetriNetUnfolderBase]: 30716/196609 cut-off events. [2023-11-29 00:00:48,174 INFO L125 PetriNetUnfolderBase]: For 24414/24414 co-relation queries the response was YES. [2023-11-29 00:00:50,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245765 conditions, 196609 events. 30716/196609 cut-off events. For 24414/24414 co-relation queries the response was YES. Maximal size of possible extension queue 2829. Compared 3452302 event pairs, 26817 based on Foata normal form. 0/178530 useless extension candidates. Maximal degree in co-relation 245718. Up to 40142 conditions per place. [2023-11-29 00:00:51,725 INFO L140 encePairwiseOnDemand]: 578/584 looper letters, 46 selfloop transitions, 1 changer transitions 0/542 dead transitions. [2023-11-29 00:00:51,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 542 transitions, 1226 flow [2023-11-29 00:00:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:00:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:00:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1552 transitions. [2023-11-29 00:00:51,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8858447488584474 [2023-11-29 00:00:51,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1552 transitions. [2023-11-29 00:00:51,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1552 transitions. [2023-11-29 00:00:51,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:00:51,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1552 transitions. [2023-11-29 00:00:51,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 517.3333333333334) internal successors, (1552), 3 states have internal predecessors, (1552), 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 00:00:51,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 00:00:51,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 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 00:00:51,742 INFO L175 Difference]: Start difference. First operand has 544 places, 547 transitions, 1142 flow. Second operand 3 states and 1552 transitions. [2023-11-29 00:00:51,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 542 transitions, 1226 flow [2023-11-29 00:00:52,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 542 transitions, 1222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:00:52,093 INFO L231 Difference]: Finished difference. Result has 539 places, 542 transitions, 1130 flow [2023-11-29 00:00:52,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=584, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1130, PETRI_PLACES=539, PETRI_TRANSITIONS=542} [2023-11-29 00:00:52,095 INFO L281 CegarLoopForPetriNet]: 549 programPoint places, -10 predicate places. [2023-11-29 00:00:52,095 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 542 transitions, 1130 flow [2023-11-29 00:00:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 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 00:00:52,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:00:52,096 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] [2023-11-29 00:00:52,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:00:52,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-11-29 00:00:52,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:00:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 490229731, now seen corresponding path program 1 times [2023-11-29 00:00:52,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:00:52,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363353409] [2023-11-29 00:00:52,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:00:52,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:00:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:00:52,466 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 00:00:52,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:00:52,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363353409] [2023-11-29 00:00:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363353409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:00:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:00:52,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:00:52,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087385729] [2023-11-29 00:00:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:00:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:00:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:00:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:00:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:00:53,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 584 [2023-11-29 00:00:53,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 542 transitions, 1130 flow. Second operand has 6 states, 6 states have (on average 402.3333333333333) internal successors, (2414), 6 states have internal predecessors, (2414), 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 00:00:53,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:00:53,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 584 [2023-11-29 00:00:53,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand