./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:02:28,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:02:28,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-28 05:02:28,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:02:28,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:02:28,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:02:28,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:02:28,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:02:28,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:02:28,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:02:28,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:02:28,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:02:28,987 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:02:28,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:02:28,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:02:28,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:02:28,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:02:28,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:02:28,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:02:28,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:02:28,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:02:28,988 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:02:28,988 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-28 05:02:28,988 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:02:28,989 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:02:28,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:02:28,989 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:02:28,989 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:02:28,989 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:02:28,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:02:28,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:02:28,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:02:28,990 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:02:28,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:02:28,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:02:28,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:02:28,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:02:28,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:02:28,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:02:28,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:02:28,992 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2024-11-28 05:02:29,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:02:29,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:02:29,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:02:29,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:02:29,326 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:02:29,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2024-11-28 05:02:32,456 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/data/f9248e763/4bd98d7061ea4cffbe1cce8e111b1070/FLAG46512f8a4 [2024-11-28 05:02:32,783 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:02:32,784 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2024-11-28 05:02:32,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/data/f9248e763/4bd98d7061ea4cffbe1cce8e111b1070/FLAG46512f8a4 [2024-11-28 05:02:32,840 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/data/f9248e763/4bd98d7061ea4cffbe1cce8e111b1070 [2024-11-28 05:02:32,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:02:32,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:02:32,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:02:32,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:02:32,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:02:32,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:02:32" (1/1) ... [2024-11-28 05:02:32,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7a022c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:32, skipping insertion in model container [2024-11-28 05:02:32,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:02:32" (1/1) ... [2024-11-28 05:02:32,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:02:33,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:02:33,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:02:33,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:02:33,705 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:02:33,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33 WrapperNode [2024-11-28 05:02:33,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:02:33,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:02:33,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:02:33,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:02:33,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,810 INFO L138 Inliner]: procedures = 223, calls = 39, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 219 [2024-11-28 05:02:33,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:02:33,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:02:33,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:02:33,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:02:33,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:02:33,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:02:33,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:02:33,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:02:33,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (1/1) ... [2024-11-28 05:02:33,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:02:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:02:33,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:02:33,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9acf60-8376-450e-b160-0cf02c5de442/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:02:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2024-11-28 05:02:33,956 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2024-11-28 05:02:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:02:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:02:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 05:02:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 05:02:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:02:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 05:02:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:02:33,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:02:33,958 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:02:34,144 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:02:34,146 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:02:34,811 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:02:34,812 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:02:34,837 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:02:34,837 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 05:02:34,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:02:34 BoogieIcfgContainer [2024-11-28 05:02:34,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:02:34,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:02:34,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:02:34,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:02:34,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:02:32" (1/3) ... [2024-11-28 05:02:34,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322547bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:02:34, skipping insertion in model container [2024-11-28 05:02:34,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:02:33" (2/3) ... [2024-11-28 05:02:34,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322547bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:02:34, skipping insertion in model container [2024-11-28 05:02:34,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:02:34" (3/3) ... [2024-11-28 05:02:34,856 INFO L128 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2024-11-28 05:02:34,876 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:02:34,878 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ring_1w1r-2.i that has 2 procedures, 254 locations, 1 initial locations, 3 loop locations, and 16 error locations. [2024-11-28 05:02:34,879 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:02:35,049 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 05:02:35,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 266 transitions, 539 flow [2024-11-28 05:02:35,286 INFO L124 PetriNetUnfolderBase]: 13/265 cut-off events. [2024-11-28 05:02:35,290 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:02:35,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 265 events. 13/265 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 536 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2024-11-28 05:02:35,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 266 transitions, 539 flow [2024-11-28 05:02:35,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 259 transitions, 521 flow [2024-11-28 05:02:35,330 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:02:35,352 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a30b973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:02:35,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-28 05:02:35,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:02:35,365 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-11-28 05:02:35,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:02:35,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:35,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:35,367 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:35,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1724261668, now seen corresponding path program 1 times [2024-11-28 05:02:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:35,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169154403] [2024-11-28 05:02:35,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:36,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:36,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169154403] [2024-11-28 05:02:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169154403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10532210] [2024-11-28 05:02:36,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:36,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:36,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:36,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:37,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 266 [2024-11-28 05:02:37,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 259 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:37,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:37,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 266 [2024-11-28 05:02:37,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:38,402 INFO L124 PetriNetUnfolderBase]: 927/4296 cut-off events. [2024-11-28 05:02:38,402 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:02:38,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 4296 events. 927/4296 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 33967 event pairs, 768 based on Foata normal form. 398/4280 useless extension candidates. Maximal degree in co-relation 5978. Up to 1732 conditions per place. [2024-11-28 05:02:38,442 INFO L140 encePairwiseOnDemand]: 251/266 looper letters, 62 selfloop transitions, 5 changer transitions 0/246 dead transitions. [2024-11-28 05:02:38,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 246 transitions, 629 flow [2024-11-28 05:02:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1205 transitions. [2024-11-28 05:02:38,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7550125313283208 [2024-11-28 05:02:38,467 INFO L175 Difference]: Start difference. First operand has 250 places, 259 transitions, 521 flow. Second operand 6 states and 1205 transitions. [2024-11-28 05:02:38,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 246 transitions, 629 flow [2024-11-28 05:02:38,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 246 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:02:38,485 INFO L231 Difference]: Finished difference. Result has 250 places, 246 transitions, 504 flow [2024-11-28 05:02:38,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=504, PETRI_PLACES=250, PETRI_TRANSITIONS=246} [2024-11-28 05:02:38,492 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 0 predicate places. [2024-11-28 05:02:38,493 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 246 transitions, 504 flow [2024-11-28 05:02:38,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:38,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:38,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:38,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:02:38,495 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:38,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1480979684, now seen corresponding path program 1 times [2024-11-28 05:02:38,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:38,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391627203] [2024-11-28 05:02:38,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:38,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:39,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:39,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391627203] [2024-11-28 05:02:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391627203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:39,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:39,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669467679] [2024-11-28 05:02:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:39,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:39,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:39,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:39,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 266 [2024-11-28 05:02:39,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 246 transitions, 504 flow. Second operand has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:39,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:39,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 266 [2024-11-28 05:02:39,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:40,512 INFO L124 PetriNetUnfolderBase]: 927/4295 cut-off events. [2024-11-28 05:02:40,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:02:40,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6041 conditions, 4295 events. 927/4295 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 34042 event pairs, 768 based on Foata normal form. 0/3882 useless extension candidates. Maximal degree in co-relation 5990. Up to 1732 conditions per place. [2024-11-28 05:02:40,539 INFO L140 encePairwiseOnDemand]: 260/266 looper letters, 62 selfloop transitions, 5 changer transitions 0/245 dead transitions. [2024-11-28 05:02:40,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 245 transitions, 636 flow [2024-11-28 05:02:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1196 transitions. [2024-11-28 05:02:40,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7493734335839599 [2024-11-28 05:02:40,544 INFO L175 Difference]: Start difference. First operand has 250 places, 246 transitions, 504 flow. Second operand 6 states and 1196 transitions. [2024-11-28 05:02:40,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 245 transitions, 636 flow [2024-11-28 05:02:40,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 245 transitions, 626 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:02:40,559 INFO L231 Difference]: Finished difference. Result has 249 places, 245 transitions, 502 flow [2024-11-28 05:02:40,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=249, PETRI_TRANSITIONS=245} [2024-11-28 05:02:40,561 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, -1 predicate places. [2024-11-28 05:02:40,561 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 245 transitions, 502 flow [2024-11-28 05:02:40,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.33333333333334) internal successors, (1136), 6 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:40,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:40,562 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:40,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:02:40,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:40,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash 854786913, now seen corresponding path program 1 times [2024-11-28 05:02:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:40,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871078754] [2024-11-28 05:02:40,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:40,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:41,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:41,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871078754] [2024-11-28 05:02:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871078754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:41,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:41,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361998659] [2024-11-28 05:02:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:41,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:41,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:41,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:41,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:42,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 266 [2024-11-28 05:02:42,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 245 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:42,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:42,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 266 [2024-11-28 05:02:42,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:42,696 INFO L124 PetriNetUnfolderBase]: 330/2437 cut-off events. [2024-11-28 05:02:42,696 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 05:02:42,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2437 events. 330/2437 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18133 event pairs, 94 based on Foata normal form. 0/2164 useless extension candidates. Maximal degree in co-relation 2994. Up to 494 conditions per place. [2024-11-28 05:02:42,710 INFO L140 encePairwiseOnDemand]: 244/266 looper letters, 37 selfloop transitions, 44 changer transitions 0/287 dead transitions. [2024-11-28 05:02:42,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 287 transitions, 748 flow [2024-11-28 05:02:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1385 transitions. [2024-11-28 05:02:42,715 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8677944862155389 [2024-11-28 05:02:42,715 INFO L175 Difference]: Start difference. First operand has 249 places, 245 transitions, 502 flow. Second operand 6 states and 1385 transitions. [2024-11-28 05:02:42,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 287 transitions, 748 flow [2024-11-28 05:02:42,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 287 transitions, 738 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:02:42,724 INFO L231 Difference]: Finished difference. Result has 254 places, 287 transitions, 792 flow [2024-11-28 05:02:42,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=792, PETRI_PLACES=254, PETRI_TRANSITIONS=287} [2024-11-28 05:02:42,725 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 4 predicate places. [2024-11-28 05:02:42,725 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 287 transitions, 792 flow [2024-11-28 05:02:42,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:42,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:42,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:42,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:02:42,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:42,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 279453878, now seen corresponding path program 1 times [2024-11-28 05:02:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:42,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338715009] [2024-11-28 05:02:42,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:42,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:43,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338715009] [2024-11-28 05:02:43,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338715009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196494293] [2024-11-28 05:02:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:43,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:43,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:43,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:44,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 266 [2024-11-28 05:02:44,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 287 transitions, 792 flow. Second operand has 6 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:44,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:44,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 266 [2024-11-28 05:02:44,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:45,061 INFO L124 PetriNetUnfolderBase]: 457/4405 cut-off events. [2024-11-28 05:02:45,061 INFO L125 PetriNetUnfolderBase]: For 652/830 co-relation queries the response was YES. [2024-11-28 05:02:45,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6469 conditions, 4405 events. 457/4405 cut-off events. For 652/830 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 37579 event pairs, 73 based on Foata normal form. 68/4097 useless extension candidates. Maximal degree in co-relation 6409. Up to 613 conditions per place. [2024-11-28 05:02:45,096 INFO L140 encePairwiseOnDemand]: 242/266 looper letters, 80 selfloop transitions, 41 changer transitions 0/333 dead transitions. [2024-11-28 05:02:45,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 333 transitions, 1162 flow [2024-11-28 05:02:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:45,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1362 transitions. [2024-11-28 05:02:45,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8533834586466166 [2024-11-28 05:02:45,102 INFO L175 Difference]: Start difference. First operand has 254 places, 287 transitions, 792 flow. Second operand 6 states and 1362 transitions. [2024-11-28 05:02:45,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 333 transitions, 1162 flow [2024-11-28 05:02:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 333 transitions, 1162 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:02:45,121 INFO L231 Difference]: Finished difference. Result has 264 places, 327 transitions, 1134 flow [2024-11-28 05:02:45,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1134, PETRI_PLACES=264, PETRI_TRANSITIONS=327} [2024-11-28 05:02:45,123 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 14 predicate places. [2024-11-28 05:02:45,123 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 327 transitions, 1134 flow [2024-11-28 05:02:45,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.66666666666666) internal successors, (1294), 6 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:45,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:45,124 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:45,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:02:45,125 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:45,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1011601033, now seen corresponding path program 1 times [2024-11-28 05:02:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010185849] [2024-11-28 05:02:45,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:45,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:45,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010185849] [2024-11-28 05:02:45,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010185849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:45,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:45,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824662370] [2024-11-28 05:02:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:45,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:45,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:45,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:46,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 266 [2024-11-28 05:02:46,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 327 transitions, 1134 flow. Second operand has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:46,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:46,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 266 [2024-11-28 05:02:46,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:47,569 INFO L124 PetriNetUnfolderBase]: 735/5267 cut-off events. [2024-11-28 05:02:47,569 INFO L125 PetriNetUnfolderBase]: For 2499/3038 co-relation queries the response was YES. [2024-11-28 05:02:47,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9546 conditions, 5267 events. 735/5267 cut-off events. For 2499/3038 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 45668 event pairs, 80 based on Foata normal form. 106/4992 useless extension candidates. Maximal degree in co-relation 9481. Up to 1019 conditions per place. [2024-11-28 05:02:47,624 INFO L140 encePairwiseOnDemand]: 244/266 looper letters, 95 selfloop transitions, 86 changer transitions 0/409 dead transitions. [2024-11-28 05:02:47,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 409 transitions, 1968 flow [2024-11-28 05:02:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1385 transitions. [2024-11-28 05:02:47,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8677944862155389 [2024-11-28 05:02:47,629 INFO L175 Difference]: Start difference. First operand has 264 places, 327 transitions, 1134 flow. Second operand 6 states and 1385 transitions. [2024-11-28 05:02:47,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 409 transitions, 1968 flow [2024-11-28 05:02:47,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 409 transitions, 1968 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:02:47,652 INFO L231 Difference]: Finished difference. Result has 274 places, 409 transitions, 2010 flow [2024-11-28 05:02:47,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2010, PETRI_PLACES=274, PETRI_TRANSITIONS=409} [2024-11-28 05:02:47,654 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 24 predicate places. [2024-11-28 05:02:47,654 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 409 transitions, 2010 flow [2024-11-28 05:02:47,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:47,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:47,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:47,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:02:47,656 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:47,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash -61202264, now seen corresponding path program 1 times [2024-11-28 05:02:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339594277] [2024-11-28 05:02:47,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:47,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339594277] [2024-11-28 05:02:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339594277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:48,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:48,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008263453] [2024-11-28 05:02:48,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:48,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:48,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:48,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:48,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:49,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 266 [2024-11-28 05:02:49,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 409 transitions, 2010 flow. Second operand has 6 states, 6 states have (on average 232.66666666666666) internal successors, (1396), 6 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:49,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:49,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 266 [2024-11-28 05:02:49,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:50,065 INFO L124 PetriNetUnfolderBase]: 825/5978 cut-off events. [2024-11-28 05:02:50,065 INFO L125 PetriNetUnfolderBase]: For 5566/6311 co-relation queries the response was YES. [2024-11-28 05:02:50,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11874 conditions, 5978 events. 825/5978 cut-off events. For 5566/6311 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 54264 event pairs, 48 based on Foata normal form. 237/5831 useless extension candidates. Maximal degree in co-relation 11804. Up to 705 conditions per place. [2024-11-28 05:02:50,104 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 98 selfloop transitions, 62 changer transitions 0/470 dead transitions. [2024-11-28 05:02:50,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 470 transitions, 2686 flow [2024-11-28 05:02:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1432 transitions. [2024-11-28 05:02:50,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8972431077694235 [2024-11-28 05:02:50,108 INFO L175 Difference]: Start difference. First operand has 274 places, 409 transitions, 2010 flow. Second operand 6 states and 1432 transitions. [2024-11-28 05:02:50,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 470 transitions, 2686 flow [2024-11-28 05:02:50,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 470 transitions, 2686 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:02:50,135 INFO L231 Difference]: Finished difference. Result has 284 places, 467 transitions, 2678 flow [2024-11-28 05:02:50,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2678, PETRI_PLACES=284, PETRI_TRANSITIONS=467} [2024-11-28 05:02:50,136 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 34 predicate places. [2024-11-28 05:02:50,137 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 467 transitions, 2678 flow [2024-11-28 05:02:50,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.66666666666666) internal successors, (1396), 6 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:50,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:50,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:50,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:02:50,138 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:50,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:50,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1562958404, now seen corresponding path program 1 times [2024-11-28 05:02:50,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:50,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080275233] [2024-11-28 05:02:50,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:50,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080275233] [2024-11-28 05:02:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080275233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029119046] [2024-11-28 05:02:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:50,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:50,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:50,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:51,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 266 [2024-11-28 05:02:51,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 467 transitions, 2678 flow. Second operand has 6 states, 6 states have (on average 221.66666666666666) internal successors, (1330), 6 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:51,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:51,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 266 [2024-11-28 05:02:51,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:52,586 INFO L124 PetriNetUnfolderBase]: 1113/7270 cut-off events. [2024-11-28 05:02:52,586 INFO L125 PetriNetUnfolderBase]: For 9873/10599 co-relation queries the response was YES. [2024-11-28 05:02:52,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15951 conditions, 7270 events. 1113/7270 cut-off events. For 9873/10599 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 69827 event pairs, 80 based on Foata normal form. 132/7021 useless extension candidates. Maximal degree in co-relation 15876. Up to 1306 conditions per place. [2024-11-28 05:02:52,627 INFO L140 encePairwiseOnDemand]: 245/266 looper letters, 215 selfloop transitions, 70 changer transitions 0/532 dead transitions. [2024-11-28 05:02:52,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 532 transitions, 3686 flow [2024-11-28 05:02:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2024-11-28 05:02:52,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8759398496240601 [2024-11-28 05:02:52,632 INFO L175 Difference]: Start difference. First operand has 284 places, 467 transitions, 2678 flow. Second operand 6 states and 1398 transitions. [2024-11-28 05:02:52,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 532 transitions, 3686 flow [2024-11-28 05:02:52,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 532 transitions, 3686 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 05:02:52,672 INFO L231 Difference]: Finished difference. Result has 294 places, 529 transitions, 3452 flow [2024-11-28 05:02:52,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3452, PETRI_PLACES=294, PETRI_TRANSITIONS=529} [2024-11-28 05:02:52,674 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 44 predicate places. [2024-11-28 05:02:52,674 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 529 transitions, 3452 flow [2024-11-28 05:02:52,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.66666666666666) internal successors, (1330), 6 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:52,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:52,676 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:52,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:02:52,676 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:52,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:52,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1086739933, now seen corresponding path program 1 times [2024-11-28 05:02:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683613211] [2024-11-28 05:02:52,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:53,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:53,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683613211] [2024-11-28 05:02:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683613211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:53,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:53,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:53,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570297875] [2024-11-28 05:02:53,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:53,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:53,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:53,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:53,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 266 [2024-11-28 05:02:53,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 529 transitions, 3452 flow. Second operand has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:53,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:53,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 266 [2024-11-28 05:02:53,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:02:57,288 INFO L124 PetriNetUnfolderBase]: 4630/15261 cut-off events. [2024-11-28 05:02:57,288 INFO L125 PetriNetUnfolderBase]: For 17958/18094 co-relation queries the response was YES. [2024-11-28 05:02:57,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41019 conditions, 15261 events. 4630/15261 cut-off events. For 17958/18094 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 139549 event pairs, 2055 based on Foata normal form. 40/14517 useless extension candidates. Maximal degree in co-relation 40939. Up to 8642 conditions per place. [2024-11-28 05:02:57,394 INFO L140 encePairwiseOnDemand]: 227/266 looper letters, 301 selfloop transitions, 208 changer transitions 0/694 dead transitions. [2024-11-28 05:02:57,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 694 transitions, 5296 flow [2024-11-28 05:02:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:02:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1300 transitions. [2024-11-28 05:02:57,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8145363408521303 [2024-11-28 05:02:57,399 INFO L175 Difference]: Start difference. First operand has 294 places, 529 transitions, 3452 flow. Second operand 6 states and 1300 transitions. [2024-11-28 05:02:57,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 694 transitions, 5296 flow [2024-11-28 05:02:57,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 694 transitions, 5124 flow, removed 86 selfloop flow, removed 0 redundant places. [2024-11-28 05:02:57,521 INFO L231 Difference]: Finished difference. Result has 304 places, 694 transitions, 5072 flow [2024-11-28 05:02:57,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5072, PETRI_PLACES=304, PETRI_TRANSITIONS=694} [2024-11-28 05:02:57,524 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 54 predicate places. [2024-11-28 05:02:57,525 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 694 transitions, 5072 flow [2024-11-28 05:02:57,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:57,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:02:57,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:57,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:02:57,530 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:02:57,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash -352266400, now seen corresponding path program 1 times [2024-11-28 05:02:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584045461] [2024-11-28 05:02:57,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:02:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:58,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584045461] [2024-11-28 05:02:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584045461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:58,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:02:58,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902768914] [2024-11-28 05:02:58,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:58,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:58,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:58,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:58,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:59,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 266 [2024-11-28 05:02:59,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 694 transitions, 5072 flow. Second operand has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:02:59,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:02:59,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 266 [2024-11-28 05:02:59,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:03:00,653 INFO L124 PetriNetUnfolderBase]: 1660/8997 cut-off events. [2024-11-28 05:03:00,653 INFO L125 PetriNetUnfolderBase]: For 21750/23305 co-relation queries the response was YES. [2024-11-28 05:03:00,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24047 conditions, 8997 events. 1660/8997 cut-off events. For 21750/23305 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 87554 event pairs, 101 based on Foata normal form. 220/8810 useless extension candidates. Maximal degree in co-relation 23962. Up to 1689 conditions per place. [2024-11-28 05:03:00,700 INFO L140 encePairwiseOnDemand]: 251/266 looper letters, 311 selfloop transitions, 92 changer transitions 0/781 dead transitions. [2024-11-28 05:03:00,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 781 transitions, 6716 flow [2024-11-28 05:03:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:03:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:03:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1414 transitions. [2024-11-28 05:03:00,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8859649122807017 [2024-11-28 05:03:00,705 INFO L175 Difference]: Start difference. First operand has 304 places, 694 transitions, 5072 flow. Second operand 6 states and 1414 transitions. [2024-11-28 05:03:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 781 transitions, 6716 flow [2024-11-28 05:03:00,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 781 transitions, 6528 flow, removed 94 selfloop flow, removed 0 redundant places. [2024-11-28 05:03:00,824 INFO L231 Difference]: Finished difference. Result has 314 places, 781 transitions, 6152 flow [2024-11-28 05:03:00,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4884, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6152, PETRI_PLACES=314, PETRI_TRANSITIONS=781} [2024-11-28 05:03:00,826 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 64 predicate places. [2024-11-28 05:03:00,826 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 781 transitions, 6152 flow [2024-11-28 05:03:00,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.83333333333334) internal successors, (1361), 6 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:03:00,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:03:00,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:00,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:03:00,827 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:03:00,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1041128027, now seen corresponding path program 1 times [2024-11-28 05:03:00,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100100307] [2024-11-28 05:03:00,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:03:00,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:03:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:03:04,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:04,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100100307] [2024-11-28 05:03:04,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100100307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:04,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:04,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-28 05:03:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021751031] [2024-11-28 05:03:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:04,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 05:03:04,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:04,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 05:03:04,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-11-28 05:03:16,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 266 [2024-11-28 05:03:16,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 781 transitions, 6152 flow. Second operand has 26 states, 26 states have (on average 171.8846153846154) internal successors, (4469), 26 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:03:16,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:03:16,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 266 [2024-11-28 05:03:16,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:03:33,842 INFO L124 PetriNetUnfolderBase]: 9980/36589 cut-off events. [2024-11-28 05:03:33,842 INFO L125 PetriNetUnfolderBase]: For 78386/79882 co-relation queries the response was YES. [2024-11-28 05:03:34,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112145 conditions, 36589 events. 9980/36589 cut-off events. For 78386/79882 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 398772 event pairs, 1232 based on Foata normal form. 416/35610 useless extension candidates. Maximal degree in co-relation 112046. Up to 7548 conditions per place. [2024-11-28 05:03:34,120 INFO L140 encePairwiseOnDemand]: 220/266 looper letters, 1904 selfloop transitions, 317 changer transitions 14/2529 dead transitions. [2024-11-28 05:03:34,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 2529 transitions, 25526 flow [2024-11-28 05:03:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 05:03:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2024-11-28 05:03:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 10238 transitions. [2024-11-28 05:03:34,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6872986036519871 [2024-11-28 05:03:34,148 INFO L175 Difference]: Start difference. First operand has 314 places, 781 transitions, 6152 flow. Second operand 56 states and 10238 transitions. [2024-11-28 05:03:34,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 2529 transitions, 25526 flow [2024-11-28 05:03:34,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 2529 transitions, 24886 flow, removed 320 selfloop flow, removed 0 redundant places. [2024-11-28 05:03:34,903 INFO L231 Difference]: Finished difference. Result has 409 places, 1158 transitions, 10068 flow [2024-11-28 05:03:34,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=5976, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=10068, PETRI_PLACES=409, PETRI_TRANSITIONS=1158} [2024-11-28 05:03:34,905 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 159 predicate places. [2024-11-28 05:03:34,905 INFO L471 AbstractCegarLoop]: Abstraction has has 409 places, 1158 transitions, 10068 flow [2024-11-28 05:03:34,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 171.8846153846154) internal successors, (4469), 26 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:03:34,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:03:34,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:34,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:03:34,908 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:03:34,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1148226767, now seen corresponding path program 2 times [2024-11-28 05:03:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427902196] [2024-11-28 05:03:34,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:03:34,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:34,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:03:34,950 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:03:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:03:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427902196] [2024-11-28 05:03:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427902196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:03:38,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:03:38,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 05:03:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670046373] [2024-11-28 05:03:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:03:38,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:03:38,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:38,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:03:38,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:03:50,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 266 [2024-11-28 05:03:50,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 1158 transitions, 10068 flow. Second operand has 24 states, 24 states have (on average 180.79166666666666) internal successors, (4339), 24 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:03:50,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:03:50,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 266 [2024-11-28 05:03:50,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:04:11,343 INFO L124 PetriNetUnfolderBase]: 12138/48728 cut-off events. [2024-11-28 05:04:11,343 INFO L125 PetriNetUnfolderBase]: For 214421/218028 co-relation queries the response was YES. [2024-11-28 05:04:11,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170090 conditions, 48728 events. 12138/48728 cut-off events. For 214421/218028 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 576002 event pairs, 1070 based on Foata normal form. 831/48175 useless extension candidates. Maximal degree in co-relation 169943. Up to 12468 conditions per place. [2024-11-28 05:04:11,906 INFO L140 encePairwiseOnDemand]: 214/266 looper letters, 1349 selfloop transitions, 406 changer transitions 9/2184 dead transitions. [2024-11-28 05:04:11,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 2184 transitions, 22389 flow [2024-11-28 05:04:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:04:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-28 05:04:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 6812 transitions. [2024-11-28 05:04:11,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7316863587540279 [2024-11-28 05:04:11,913 INFO L175 Difference]: Start difference. First operand has 409 places, 1158 transitions, 10068 flow. Second operand 35 states and 6812 transitions. [2024-11-28 05:04:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 2184 transitions, 22389 flow [2024-11-28 05:04:14,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 2184 transitions, 22354 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-28 05:04:14,458 INFO L231 Difference]: Finished difference. Result has 465 places, 1508 transitions, 15541 flow [2024-11-28 05:04:14,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=10037, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=15541, PETRI_PLACES=465, PETRI_TRANSITIONS=1508} [2024-11-28 05:04:14,460 INFO L279 CegarLoopForPetriNet]: 250 programPoint places, 215 predicate places. [2024-11-28 05:04:14,460 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 1508 transitions, 15541 flow [2024-11-28 05:04:14,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 180.79166666666666) internal successors, (4339), 24 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:14,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:04:14,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:04:14,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:04:14,462 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-28 05:04:14,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1522782011, now seen corresponding path program 3 times [2024-11-28 05:04:14,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:14,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130651147] [2024-11-28 05:04:14,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:04:14,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:14,514 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 05:04:14,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:04:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:04:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130651147] [2024-11-28 05:04:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130651147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:21,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:21,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2024-11-28 05:04:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638569782] [2024-11-28 05:04:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:21,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 05:04:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:21,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 05:04:21,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:04:40,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 266 [2024-11-28 05:04:40,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1508 transitions, 15541 flow. Second operand has 33 states, 33 states have (on average 128.78787878787878) internal successors, (4250), 33 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:04:40,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:04:40,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 266 [2024-11-28 05:04:40,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand