./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:02,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:02,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-06 22:04:02,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:02,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:02,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:02,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:02,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:02,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:02,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:02,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:02,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:02,210 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:02,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:02,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:04:02,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:02,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:02,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:02,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:02,215 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:04:02,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:02,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:04:02,218 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 22:04:02,218 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:02,219 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:02,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:04:02,220 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:02,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:02,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:02,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:02,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:02,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:02,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:02,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:04:02,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:02,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:02,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:02,225 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:04:02,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:02,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:02,225 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:02,226 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2023-11-06 22:04:02,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:02,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:02,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:02,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:02,673 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:02,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2023-11-06 22:04:05,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:06,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:06,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2023-11-06 22:04:06,295 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/data/8c96afb00/a4e0b0902258430b804685d235423f4d/FLAG6e34ee1e7 [2023-11-06 22:04:06,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/data/8c96afb00/a4e0b0902258430b804685d235423f4d [2023-11-06 22:04:06,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:06,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:06,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:06,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:06,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:06,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a008c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06, skipping insertion in model container [2023-11-06 22:04:06,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:06,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:06,828 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:06,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:06,919 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:06,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06 WrapperNode [2023-11-06 22:04:06,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:06,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:06,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:06,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:06,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,978 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2023-11-06 22:04:06,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:06,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:06,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:06,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:06,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:06,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:07,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:07,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:07,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:07,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:07,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:07,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:07,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:07,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:07,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (1/1) ... [2023-11-06 22:04:07,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:07,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:04:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 22:04:07,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 22:04:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:04:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:07,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:04:07,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:07,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:07,116 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:04:07,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a71321e7-6ba2-4206-9898-510b72733903/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:07,284 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:07,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:07,663 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:07,877 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:07,878 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:04:07,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:07 BoogieIcfgContainer [2023-11-06 22:04:07,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:07,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:07,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:07,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:07,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:06" (1/3) ... [2023-11-06 22:04:07,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165fe997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:07, skipping insertion in model container [2023-11-06 22:04:07,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:06" (2/3) ... [2023-11-06 22:04:07,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165fe997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:07, skipping insertion in model container [2023-11-06 22:04:07,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:07" (3/3) ... [2023-11-06 22:04:07,890 INFO L112 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2023-11-06 22:04:07,900 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:04:07,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:07,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:04:07,912 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:04:07,990 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:04:08,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 101 transitions, 206 flow [2023-11-06 22:04:08,083 INFO L124 PetriNetUnfolderBase]: 9/112 cut-off events. [2023-11-06 22:04:08,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:08,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 112 events. 9/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-06 22:04:08,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 101 transitions, 206 flow [2023-11-06 22:04:08,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 101 transitions, 206 flow [2023-11-06 22:04:08,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:08,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 101 transitions, 206 flow [2023-11-06 22:04:08,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 101 transitions, 206 flow [2023-11-06 22:04:08,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 101 transitions, 206 flow [2023-11-06 22:04:08,155 INFO L124 PetriNetUnfolderBase]: 9/112 cut-off events. [2023-11-06 22:04:08,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:08,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 112 events. 9/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2023-11-06 22:04:08,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 2072 [2023-11-06 22:04:26,835 INFO L134 LiptonReduction]: Checked pairs total: 2145 [2023-11-06 22:04:26,835 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-11-06 22:04:26,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:26,859 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1c918bfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:26,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-06 22:04:26,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:04:26,863 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-06 22:04:26,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:26,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:26,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:04:26,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-06 22:04:26,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:26,871 INFO L85 PathProgramCache]: Analyzing trace with hash 519342487, now seen corresponding path program 1 times [2023-11-06 22:04:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130821875] [2023-11-06 22:04:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:27,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:27,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130821875] [2023-11-06 22:04:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130821875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:27,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:04:27,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600195294] [2023-11-06 22:04:27,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:27,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:04:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:04:27,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:04:27,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 220 [2023-11-06 22:04:27,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 20 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:27,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:27,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 220 [2023-11-06 22:04:27,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:27,262 INFO L124 PetriNetUnfolderBase]: 16/38 cut-off events. [2023-11-06 22:04:27,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:04:27,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 38 events. 16/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 10 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 66. Up to 37 conditions per place. [2023-11-06 22:04:27,264 INFO L140 encePairwiseOnDemand]: 212/220 looper letters, 11 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2023-11-06 22:04:27,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 12 transitions, 50 flow [2023-11-06 22:04:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:04:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:04:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 193 transitions. [2023-11-06 22:04:27,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2023-11-06 22:04:27,281 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 193 transitions. [2023-11-06 22:04:27,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 193 transitions. [2023-11-06 22:04:27,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:27,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 193 transitions. [2023-11-06 22:04:27,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:27,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:27,297 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:27,299 INFO L175 Difference]: Start difference. First operand has 20 places, 20 transitions, 44 flow. Second operand 2 states and 193 transitions. [2023-11-06 22:04:27,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 12 transitions, 50 flow [2023-11-06 22:04:27,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 50 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:27,305 INFO L231 Difference]: Finished difference. Result has 14 places, 12 transitions, 28 flow [2023-11-06 22:04:27,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=14, PETRI_TRANSITIONS=12} [2023-11-06 22:04:27,311 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -6 predicate places. [2023-11-06 22:04:27,311 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 12 transitions, 28 flow [2023-11-06 22:04:27,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:27,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:27,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:04:27,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:04:27,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-06 22:04:27,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:27,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1080302174, now seen corresponding path program 1 times [2023-11-06 22:04:27,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:27,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34928646] [2023-11-06 22:04:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:04:27,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:04:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:04:27,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:04:27,386 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:04:27,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-06 22:04:27,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-06 22:04:27,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-06 22:04:27,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-06 22:04:27,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-06 22:04:27,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-06 22:04:27,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-06 22:04:27,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-06 22:04:27,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-06 22:04:27,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-06 22:04:27,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-06 22:04:27,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-06 22:04:27,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-06 22:04:27,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:04:27,395 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:04:27,398 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:04:27,398 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:04:27,466 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:04:27,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 176 transitions, 362 flow [2023-11-06 22:04:27,531 INFO L124 PetriNetUnfolderBase]: 17/200 cut-off events. [2023-11-06 22:04:27,533 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:04:27,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 200 events. 17/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 161. Up to 6 conditions per place. [2023-11-06 22:04:27,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 176 transitions, 362 flow [2023-11-06 22:04:27,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 176 transitions, 362 flow [2023-11-06 22:04:27,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:27,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 176 transitions, 362 flow [2023-11-06 22:04:27,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 176 transitions, 362 flow [2023-11-06 22:04:27,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 176 transitions, 362 flow [2023-11-06 22:04:27,627 INFO L124 PetriNetUnfolderBase]: 17/200 cut-off events. [2023-11-06 22:04:27,628 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:04:27,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 200 events. 17/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 503 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 161. Up to 6 conditions per place. [2023-11-06 22:04:27,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 15244 [2023-11-06 22:04:49,381 INFO L134 LiptonReduction]: Checked pairs total: 32254 [2023-11-06 22:04:49,382 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-11-06 22:04:49,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:04:49,386 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1c918bfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:04:49,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-06 22:04:49,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:04:49,391 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-06 22:04:49,392 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:04:49,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:49,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:49,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-06 22:04:49,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1484449597, now seen corresponding path program 1 times [2023-11-06 22:04:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674578005] [2023-11-06 22:04:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:50,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674578005] [2023-11-06 22:04:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674578005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:50,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70728798] [2023-11-06 22:04:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:50,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:04:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:04:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:04:50,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 348 [2023-11-06 22:04:50,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:50,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:50,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 348 [2023-11-06 22:04:50,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:50,923 INFO L124 PetriNetUnfolderBase]: 724/1375 cut-off events. [2023-11-06 22:04:50,923 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:04:50,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 1375 events. 724/1375 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7963 event pairs, 175 based on Foata normal form. 0/1171 useless extension candidates. Maximal degree in co-relation 1798. Up to 520 conditions per place. [2023-11-06 22:04:50,935 INFO L140 encePairwiseOnDemand]: 323/348 looper letters, 116 selfloop transitions, 24 changer transitions 0/155 dead transitions. [2023-11-06 22:04:50,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 155 transitions, 620 flow [2023-11-06 22:04:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:04:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:04:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1019 transitions. [2023-11-06 22:04:50,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48802681992337166 [2023-11-06 22:04:50,943 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1019 transitions. [2023-11-06 22:04:50,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1019 transitions. [2023-11-06 22:04:50,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:50,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1019 transitions. [2023-11-06 22:04:50,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:50,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:50,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:50,958 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 122 flow. Second operand 6 states and 1019 transitions. [2023-11-06 22:04:50,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 155 transitions, 620 flow [2023-11-06 22:04:50,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 155 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:50,963 INFO L231 Difference]: Finished difference. Result has 56 places, 69 transitions, 272 flow [2023-11-06 22:04:50,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=69} [2023-11-06 22:04:50,965 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2023-11-06 22:04:50,965 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 69 transitions, 272 flow [2023-11-06 22:04:50,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:50,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:50,966 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:04:50,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:04:50,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-06 22:04:50,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash 510453624, now seen corresponding path program 1 times [2023-11-06 22:04:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976888795] [2023-11-06 22:04:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:04:50,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:04:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:04:50,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:04:50,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:04:50,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-06 22:04:50,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-06 22:04:50,998 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-06 22:04:50,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-06 22:04:50,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-06 22:04:50,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-06 22:04:50,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-06 22:04:51,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-06 22:04:51,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-06 22:04:51,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-06 22:04:51,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-06 22:04:51,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-06 22:04:51,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-06 22:04:51,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-06 22:04:51,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-06 22:04:51,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-06 22:04:51,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-06 22:04:51,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-06 22:04:51,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-06 22:04:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:04:51,003 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:04:51,004 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:04:51,004 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:04:51,071 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:04:51,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 251 transitions, 520 flow [2023-11-06 22:04:51,134 INFO L124 PetriNetUnfolderBase]: 25/288 cut-off events. [2023-11-06 22:04:51,134 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:04:51,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 25/288 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 955 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 235. Up to 8 conditions per place. [2023-11-06 22:04:51,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 251 transitions, 520 flow [2023-11-06 22:04:51,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 251 transitions, 520 flow [2023-11-06 22:04:51,144 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:51,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 251 transitions, 520 flow [2023-11-06 22:04:51,145 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 251 transitions, 520 flow [2023-11-06 22:04:51,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 251 transitions, 520 flow [2023-11-06 22:04:51,234 INFO L124 PetriNetUnfolderBase]: 25/288 cut-off events. [2023-11-06 22:04:51,234 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:04:51,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 25/288 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 955 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 235. Up to 8 conditions per place. [2023-11-06 22:04:51,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 39516 [2023-11-06 22:05:27,687 INFO L134 LiptonReduction]: Checked pairs total: 85188 [2023-11-06 22:05:27,688 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-06 22:05:27,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:05:27,691 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1c918bfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:05:27,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:05:27,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:05:27,695 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-06 22:05:27,695 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:05:27,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:27,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:05:27,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-06 22:05:27,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1364707311, now seen corresponding path program 1 times [2023-11-06 22:05:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812920986] [2023-11-06 22:05:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:05:28,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812920986] [2023-11-06 22:05:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812920986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:28,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:28,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:05:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130485954] [2023-11-06 22:05:28,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:28,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:05:28,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:05:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:05:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:05:28,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 502 [2023-11-06 22:05:28,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:28,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:28,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 502 [2023-11-06 22:05:28,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:33,523 INFO L124 PetriNetUnfolderBase]: 19042/28773 cut-off events. [2023-11-06 22:05:33,523 INFO L125 PetriNetUnfolderBase]: For 1465/1465 co-relation queries the response was YES. [2023-11-06 22:05:33,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55743 conditions, 28773 events. 19042/28773 cut-off events. For 1465/1465 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 212807 event pairs, 3985 based on Foata normal form. 0/23739 useless extension candidates. Maximal degree in co-relation 23062. Up to 10732 conditions per place. [2023-11-06 22:05:33,803 INFO L140 encePairwiseOnDemand]: 465/502 looper letters, 173 selfloop transitions, 36 changer transitions 0/230 dead transitions. [2023-11-06 22:05:33,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 230 transitions, 944 flow [2023-11-06 22:05:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:33,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:05:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1456 transitions. [2023-11-06 22:05:33,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48339973439575035 [2023-11-06 22:05:33,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1456 transitions. [2023-11-06 22:05:33,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1456 transitions. [2023-11-06 22:05:33,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:33,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1456 transitions. [2023-11-06 22:05:33,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:33,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 502.0) internal successors, (3514), 7 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:33,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 502.0) internal successors, (3514), 7 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:33,830 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 180 flow. Second operand 6 states and 1456 transitions. [2023-11-06 22:05:33,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 230 transitions, 944 flow [2023-11-06 22:05:33,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 230 transitions, 934 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-06 22:05:33,839 INFO L231 Difference]: Finished difference. Result has 76 places, 101 transitions, 404 flow [2023-11-06 22:05:33,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=76, PETRI_TRANSITIONS=101} [2023-11-06 22:05:33,840 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2023-11-06 22:05:33,840 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 101 transitions, 404 flow [2023-11-06 22:05:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:33,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:33,842 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 22:05:33,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:05:33,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-06 22:05:33,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash 363283794, now seen corresponding path program 1 times [2023-11-06 22:05:33,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:05:33,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678360861] [2023-11-06 22:05:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:33,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:05:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:05:33,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:05:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:05:33,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:05:33,875 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:05:33,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-06 22:05:33,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-11-06 22:05:33,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-11-06 22:05:33,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-11-06 22:05:33,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-11-06 22:05:33,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-11-06 22:05:33,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-11-06 22:05:33,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-11-06 22:05:33,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-11-06 22:05:33,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-11-06 22:05:33,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-11-06 22:05:33,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-11-06 22:05:33,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-11-06 22:05:33,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-11-06 22:05:33,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-11-06 22:05:33,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-11-06 22:05:33,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-11-06 22:05:33,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-11-06 22:05:33,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-11-06 22:05:33,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-11-06 22:05:33,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-11-06 22:05:33,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-11-06 22:05:33,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-11-06 22:05:33,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-11-06 22:05:33,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-11-06 22:05:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:05:33,888 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:05:33,889 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:05:33,889 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 22:05:33,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:05:33,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 326 transitions, 680 flow [2023-11-06 22:05:34,089 INFO L124 PetriNetUnfolderBase]: 33/376 cut-off events. [2023-11-06 22:05:34,090 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:05:34,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 376 events. 33/376 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1446 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2023-11-06 22:05:34,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 326 transitions, 680 flow [2023-11-06 22:05:34,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 326 transitions, 680 flow [2023-11-06 22:05:34,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:05:34,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 326 transitions, 680 flow [2023-11-06 22:05:34,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 326 transitions, 680 flow [2023-11-06 22:05:34,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 326 transitions, 680 flow [2023-11-06 22:05:34,212 INFO L124 PetriNetUnfolderBase]: 33/376 cut-off events. [2023-11-06 22:05:34,212 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:05:34,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 376 events. 33/376 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1446 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2023-11-06 22:05:34,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 74888 [2023-11-06 22:06:23,481 INFO L134 LiptonReduction]: Checked pairs total: 165726 [2023-11-06 22:06:23,481 INFO L136 LiptonReduction]: Total number of compositions: 329 [2023-11-06 22:06:23,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:06:23,484 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1c918bfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:06:23,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-06 22:06:23,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:06:23,488 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-06 22:06:23,488 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:06:23,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:23,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:06:23,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2023-11-06 22:06:23,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:23,489 INFO L85 PathProgramCache]: Analyzing trace with hash 819952890, now seen corresponding path program 1 times [2023-11-06 22:06:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:06:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031078832] [2023-11-06 22:06:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:23,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:06:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:06:23,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031078832] [2023-11-06 22:06:23,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031078832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:23,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:23,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:06:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929216787] [2023-11-06 22:06:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:23,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:06:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:06:23,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:06:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:06:24,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 655 [2023-11-06 22:06:24,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:24,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:24,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 655 [2023-11-06 22:06:24,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand