./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:19:33,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:19:33,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:19:33,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:19:33,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:19:33,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:19:33,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:19:33,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:19:33,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:19:33,403 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:19:33,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:19:33,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:19:33,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:19:33,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:19:33,407 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:19:33,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:19:33,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:19:33,408 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:19:33,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:19:33,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:19:33,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:19:33,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:19:33,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:19:33,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:19:33,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:19:33,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:19:33,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:19:33,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:19:33,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:19:33,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:19:33,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:19:33,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:19:33,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:19:33,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:19:33,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:19:33,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:19:33,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:19:33,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:19:33,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:19:33,417 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:19:33,417 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:19:33,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:19:33,418 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 18:19:33,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:19:33,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:19:33,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:19:33,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:19:33,747 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:19:33,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2023-11-22 18:19:34,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:19:35,264 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:19:35,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2023-11-22 18:19:35,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43993b5e/0122f5d751924e0a9b7cf397bc1bdd16/FLAGa20cfae38 [2023-11-22 18:19:35,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b43993b5e/0122f5d751924e0a9b7cf397bc1bdd16 [2023-11-22 18:19:35,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:19:35,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:19:35,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:19:35,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:19:35,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:19:35,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c61f921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35, skipping insertion in model container [2023-11-22 18:19:35,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:19:35,681 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i[30747,30760] [2023-11-22 18:19:35,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:19:35,707 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:19:35,794 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i[30747,30760] [2023-11-22 18:19:35,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:19:35,825 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 18:19:35,825 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 18:19:35,833 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:19:35,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35 WrapperNode [2023-11-22 18:19:35,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:19:35,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:19:35,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:19:35,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:19:35,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,903 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2023-11-22 18:19:35,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:19:35,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:19:35,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:19:35,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:19:35,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,927 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,948 INFO L189 HeapSplitter]: Split 8 memory accesses to 3 slices as follows [2, 1, 5] [2023-11-22 18:19:35,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:19:35,988 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:19:35,988 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:19:35,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:19:35,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (1/1) ... [2023-11-22 18:19:35,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:19:36,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:19:36,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:19:36,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:19:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-22 18:19:36,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-22 18:19:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:19:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:19:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:19:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-22 18:19:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-22 18:19:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:19:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:19:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:19:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:19:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:19:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:19:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-22 18:19:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-22 18:19:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:19:36,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:19:36,077 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 18:19:36,222 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:19:36,225 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:19:36,364 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:19:36,444 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:19:36,444 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-22 18:19:36,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:19:36 BoogieIcfgContainer [2023-11-22 18:19:36,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:19:36,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:19:36,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:19:36,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:19:36,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:19:35" (1/3) ... [2023-11-22 18:19:36,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fffc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:19:36, skipping insertion in model container [2023-11-22 18:19:36,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:19:35" (2/3) ... [2023-11-22 18:19:36,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fffc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:19:36, skipping insertion in model container [2023-11-22 18:19:36,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:19:36" (3/3) ... [2023-11-22 18:19:36,452 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2023-11-22 18:19:36,460 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-22 18:19:36,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:19:36,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:19:36,475 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 18:19:36,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 18:19:36,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 20 transitions, 44 flow [2023-11-22 18:19:36,595 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-11-22 18:19:36,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 18:19:36,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 1/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-22 18:19:36,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 20 transitions, 44 flow [2023-11-22 18:19:36,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 20 transitions, 44 flow [2023-11-22 18:19:36,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:19:36,622 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a1bbce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:19:36,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 18:19:36,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 18:19:36,640 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-22 18:19:36,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 18:19:36,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 18:19:36,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-22 18:19:36,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:19:36,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:19:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash 457546725, now seen corresponding path program 1 times [2023-11-22 18:19:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:19:36,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602308469] [2023-11-22 18:19:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:19:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:19:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:19:36,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 18:19:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:19:36,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 18:19:36,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 18:19:36,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-22 18:19:36,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-22 18:19:36,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-22 18:19:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:19:36,868 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-22 18:19:36,876 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-22 18:19:36,877 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-22 18:19:36,916 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 18:19:36,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 80 flow [2023-11-22 18:19:36,941 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2023-11-22 18:19:36,941 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-22 18:19:36,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 40 events. 2/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2023-11-22 18:19:36,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 80 flow [2023-11-22 18:19:36,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 80 flow [2023-11-22 18:19:36,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:19:36,949 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a1bbce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:19:36,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-22 18:19:36,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 18:19:36,958 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-11-22 18:19:36,958 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-22 18:19:36,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 18:19:36,959 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-22 18:19:36,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-22 18:19:36,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:19:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2140217933, now seen corresponding path program 1 times [2023-11-22 18:19:36,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:19:36,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465058302] [2023-11-22 18:19:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:19:36,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:19:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:19:37,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 18:19:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:19:37,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 18:19:37,052 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 18:19:37,053 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-22 18:19:37,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-22 18:19:37,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-22 18:19:37,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-22 18:19:37,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:19:37,054 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-22 18:19:37,055 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-22 18:19:37,055 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-22 18:19:37,109 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 18:19:37,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 118 flow [2023-11-22 18:19:37,140 INFO L124 PetriNetUnfolderBase]: 3/58 cut-off events. [2023-11-22 18:19:37,140 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-22 18:19:37,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 3/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 156 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-11-22 18:19:37,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 50 transitions, 118 flow [2023-11-22 18:19:37,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 118 flow [2023-11-22 18:19:37,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:19:37,144 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a1bbce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:19:37,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-22 18:19:37,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 18:19:37,158 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-22 18:19:37,158 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-22 18:19:37,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 18:19:37,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:19:37,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-22 18:19:37,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:19:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1633164923, now seen corresponding path program 1 times [2023-11-22 18:19:37,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:19:37,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640140291] [2023-11-22 18:19:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:19:37,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:19:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:19:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:19:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:19:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640140291] [2023-11-22 18:19:37,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640140291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:19:37,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:19:37,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:19:37,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54827490] [2023-11-22 18:19:37,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:19:37,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:19:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:19:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:19:37,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:19:37,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2023-11-22 18:19:37,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2023-11-22 18:19:37,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 18:19:37,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2023-11-22 18:19:37,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 18:19:39,436 INFO L124 PetriNetUnfolderBase]: 11367/19206 cut-off events. [2023-11-22 18:19:39,437 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2023-11-22 18:19:39,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35951 conditions, 19206 events. 11367/19206 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 156365 event pairs, 3321 based on Foata normal form. 0/16619 useless extension candidates. Maximal degree in co-relation 19822. Up to 7422 conditions per place. [2023-11-22 18:19:39,645 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 104 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2023-11-22 18:19:39,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 129 transitions, 546 flow [2023-11-22 18:19:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:19:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-22 18:19:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2023-11-22 18:19:39,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2023-11-22 18:19:39,666 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 205 transitions. [2023-11-22 18:19:39,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 205 transitions. [2023-11-22 18:19:39,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 18:19:39,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 205 transitions. [2023-11-22 18:19:39,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 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) [2023-11-22 18:19:39,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 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) [2023-11-22 18:19:39,680 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 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) [2023-11-22 18:19:39,682 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 118 flow. Second operand 6 states and 205 transitions. [2023-11-22 18:19:39,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 129 transitions, 546 flow [2023-11-22 18:19:39,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 129 transitions, 536 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-22 18:19:39,692 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 205 flow [2023-11-22 18:19:39,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2023-11-22 18:19:39,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-11-22 18:19:39,697 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 205 flow [2023-11-22 18:19:39,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2023-11-22 18:19:39,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 18:19:39,698 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-22 18:19:39,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 18:19:39,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-22 18:19:39,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:19:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1584321508, now seen corresponding path program 1 times [2023-11-22 18:19:39,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:19:39,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899553938] [2023-11-22 18:19:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:19:39,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:19:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:19:39,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-22 18:19:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-22 18:19:39,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-22 18:19:39,756 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-22 18:19:39,756 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-22 18:19:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-22 18:19:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-22 18:19:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-22 18:19:39,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-22 18:19:39,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 18:19:39,758 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-22 18:19:39,758 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-22 18:19:39,758 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-22 18:19:39,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-22 18:19:39,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 158 flow [2023-11-22 18:19:39,801 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2023-11-22 18:19:39,802 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-22 18:19:39,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 76 events. 4/76 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 224 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 70. Up to 5 conditions per place. [2023-11-22 18:19:39,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 65 transitions, 158 flow [2023-11-22 18:19:39,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 158 flow [2023-11-22 18:19:39,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:19:39,810 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3a1bbce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:19:39,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-22 18:19:39,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 18:19:39,815 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-11-22 18:19:39,815 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-22 18:19:39,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 18:19:39,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:19:39,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-22 18:19:39,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:19:39,816 INFO L85 PathProgramCache]: Analyzing trace with hash -469511382, now seen corresponding path program 1 times [2023-11-22 18:19:39,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:19:39,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242516998] [2023-11-22 18:19:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:19:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:19:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:19:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:19:39,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:19:39,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242516998] [2023-11-22 18:19:39,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242516998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:19:39,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:19:39,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:19:39,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350926352] [2023-11-22 18:19:39,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:19:39,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:19:39,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:19:39,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:19:39,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:19:39,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2023-11-22 18:19:39,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2023-11-22 18:19:39,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 18:19:39,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2023-11-22 18:19:39,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 18:19:58,430 INFO L124 PetriNetUnfolderBase]: 207509/303710 cut-off events. [2023-11-22 18:19:58,430 INFO L125 PetriNetUnfolderBase]: For 16564/16564 co-relation queries the response was YES. [2023-11-22 18:19:59,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580116 conditions, 303710 events. 207509/303710 cut-off events. For 16564/16564 co-relation queries the response was YES. Maximal size of possible extension queue 12236. Compared 2720284 event pairs, 70548 based on Foata normal form. 0/257898 useless extension candidates. Maximal degree in co-relation 131702. Up to 133343 conditions per place. [2023-11-22 18:20:00,449 INFO L140 encePairwiseOnDemand]: 52/65 looper letters, 144 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2023-11-22 18:20:00,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 176 transitions, 772 flow [2023-11-22 18:20:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:20:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-22 18:20:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2023-11-22 18:20:00,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7025641025641025 [2023-11-22 18:20:00,457 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 274 transitions. [2023-11-22 18:20:00,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 274 transitions. [2023-11-22 18:20:00,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 18:20:00,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 274 transitions. [2023-11-22 18:20:00,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.666666666666664) internal successors, (274), 6 states have internal predecessors, (274), 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) [2023-11-22 18:20:00,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-22 18:20:00,463 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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) [2023-11-22 18:20:00,463 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 158 flow. Second operand 6 states and 274 transitions. [2023-11-22 18:20:00,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 176 transitions, 772 flow [2023-11-22 18:20:00,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 176 transitions, 742 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-11-22 18:20:00,475 INFO L231 Difference]: Finished difference. Result has 78 places, 80 transitions, 268 flow [2023-11-22 18:20:00,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=78, PETRI_TRANSITIONS=80} [2023-11-22 18:20:00,477 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-11-22 18:20:00,478 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 80 transitions, 268 flow [2023-11-22 18:20:00,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2023-11-22 18:20:00,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 18:20:00,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:20:00,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 18:20:00,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-22 18:20:00,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:20:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1225321965, now seen corresponding path program 1 times [2023-11-22 18:20:00,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:20:00,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233587508] [2023-11-22 18:20:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:20:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:20:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:20:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 18:20:00,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:20:00,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233587508] [2023-11-22 18:20:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233587508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:20:00,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:20:00,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:20:00,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594865636] [2023-11-22 18:20:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:20:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:20:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:20:00,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:20:00,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:20:00,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2023-11-22 18:20:00,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2023-11-22 18:20:00,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 18:20:00,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2023-11-22 18:20:00,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand