./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:53:11,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:53:11,947 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:53:11,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:53:11,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:53:11,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:53:11,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:53:11,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:53:11,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:53:11,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:53:11,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:53:11,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:53:11,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:53:11,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:53:11,988 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:53:11,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:53:11,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:53:11,989 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:53:11,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:53:11,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:53:11,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:53:11,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:53:11,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:53:11,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:53:11,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:53:11,994 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:53:11,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:53:11,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:53:11,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:53:11,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:53:11,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:53:11,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:53:11,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:53:11,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:53:11,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:53:11,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:53:11,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:53:11,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:53:11,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:53:11,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:53:11,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:53:11,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:53:11,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-19 01:53:12,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:53:12,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:53:12,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:53:12,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:53:12,337 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:53:12,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-19 01:53:13,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:53:13,940 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:53:13,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-19 01:53:13,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebf5ba44/30b3f2b14e074e49977984281c8bfb21/FLAG14362367c [2024-11-19 01:53:13,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aebf5ba44/30b3f2b14e074e49977984281c8bfb21 [2024-11-19 01:53:13,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:53:13,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:53:13,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:53:13,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:53:13,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:53:13,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:53:13" (1/1) ... [2024-11-19 01:53:13,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20361b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:13, skipping insertion in model container [2024-11-19 01:53:13,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:53:13" (1/1) ... [2024-11-19 01:53:13,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:53:14,119 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-11-19 01:53:14,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:53:14,138 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:53:14,165 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-11-19 01:53:14,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:53:14,196 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:53:14,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14 WrapperNode [2024-11-19 01:53:14,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:53:14,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:53:14,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:53:14,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:53:14,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,236 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 98 [2024-11-19 01:53:14,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:53:14,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:53:14,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:53:14,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:53:14,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,260 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:53:14,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:53:14,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:53:14,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:53:14,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:53:14,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (1/1) ... [2024-11-19 01:53:14,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:53:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:14,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:53:14,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:53:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:53:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:53:14,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:53:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:53:14,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:53:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:53:14,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:53:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:53:14,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:53:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:53:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:53:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:53:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:53:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:53:14,345 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:53:14,415 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:53:14,416 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:53:14,544 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:53:14,544 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:53:14,653 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:53:14,653 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:53:14,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:53:14 BoogieIcfgContainer [2024-11-19 01:53:14,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:53:14,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:53:14,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:53:14,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:53:14,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:53:13" (1/3) ... [2024-11-19 01:53:14,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db19b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:53:14, skipping insertion in model container [2024-11-19 01:53:14,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:53:14" (2/3) ... [2024-11-19 01:53:14,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db19b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:53:14, skipping insertion in model container [2024-11-19 01:53:14,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:53:14" (3/3) ... [2024-11-19 01:53:14,663 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-19 01:53:14,675 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:53:14,675 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:53:14,675 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:53:14,718 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 01:53:14,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-19 01:53:14,772 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-19 01:53:14,772 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:53:14,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-19 01:53:14,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-19 01:53:14,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-19 01:53:14,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:53:14,788 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@762602b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:53:14,788 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:53:14,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:53:14,803 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 01:53:14,803 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:53:14,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:14,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:14,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:14,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash -196909692, now seen corresponding path program 1 times [2024-11-19 01:53:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:14,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988853848] [2024-11-19 01:53:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:15,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988853848] [2024-11-19 01:53:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988853848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:15,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:15,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:53:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098495759] [2024-11-19 01:53:15,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:15,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:53:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:53:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:53:15,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-19 01:53:15,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:15,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:15,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-19 01:53:15,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:15,719 INFO L124 PetriNetUnfolderBase]: 3042/4228 cut-off events. [2024-11-19 01:53:15,719 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-11-19 01:53:15,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8628 conditions, 4228 events. 3042/4228 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18771 event pairs, 763 based on Foata normal form. 152/4370 useless extension candidates. Maximal degree in co-relation 7622. Up to 3203 conditions per place. [2024-11-19 01:53:15,747 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-19 01:53:15,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-19 01:53:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:53:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:53:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-19 01:53:15,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-19 01:53:15,758 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-11-19 01:53:15,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-19 01:53:15,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 01:53:15,771 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-19 01:53:15,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-19 01:53:15,776 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-19 01:53:15,801 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-19 01:53:15,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:15,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:15,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:15,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:53:15,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:15,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1212674722, now seen corresponding path program 1 times [2024-11-19 01:53:15,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:15,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576167466] [2024-11-19 01:53:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:15,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:15,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576167466] [2024-11-19 01:53:15,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576167466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:15,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:15,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:53:15,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686871254] [2024-11-19 01:53:15,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:15,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:53:15,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:53:15,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:53:15,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:15,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:15,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:15,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:15,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:17,000 INFO L124 PetriNetUnfolderBase]: 11982/15969 cut-off events. [2024-11-19 01:53:17,001 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-11-19 01:53:17,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33885 conditions, 15969 events. 11982/15969 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 80300 event pairs, 4246 based on Foata normal form. 0/12597 useless extension candidates. Maximal degree in co-relation 9444. Up to 8562 conditions per place. [2024-11-19 01:53:17,078 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-19 01:53:17,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-19 01:53:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:53:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:53:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-19 01:53:17,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-11-19 01:53:17,082 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 129 transitions. [2024-11-19 01:53:17,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-19 01:53:17,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:53:17,085 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-19 01:53:17,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-19 01:53:17,086 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-19 01:53:17,087 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-19 01:53:17,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:17,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:17,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:17,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:53:17,087 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:17,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1378229130, now seen corresponding path program 2 times [2024-11-19 01:53:17,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:17,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506444954] [2024-11-19 01:53:17,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:53:17,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:17,119 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:17,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506444954] [2024-11-19 01:53:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506444954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:17,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608740194] [2024-11-19 01:53:17,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:53:17,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:17,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:17,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:53:17,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:17,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:17,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:53:17,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:17,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:17,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608740194] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:17,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:53:17,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 8 [2024-11-19 01:53:17,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920955833] [2024-11-19 01:53:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:17,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:53:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:53:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:53:17,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:17,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:17,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:17,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:17,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:18,608 INFO L124 PetriNetUnfolderBase]: 12650/17145 cut-off events. [2024-11-19 01:53:18,609 INFO L125 PetriNetUnfolderBase]: For 8293/8319 co-relation queries the response was YES. [2024-11-19 01:53:18,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45606 conditions, 17145 events. 12650/17145 cut-off events. For 8293/8319 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 89824 event pairs, 1573 based on Foata normal form. 498/17448 useless extension candidates. Maximal degree in co-relation 24178. Up to 7881 conditions per place. [2024-11-19 01:53:18,717 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 88 selfloop transitions, 7 changer transitions 2/102 dead transitions. [2024-11-19 01:53:18,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 102 transitions, 564 flow [2024-11-19 01:53:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:53:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:53:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-19 01:53:18,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-19 01:53:18,719 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 104 transitions. [2024-11-19 01:53:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 102 transitions, 564 flow [2024-11-19 01:53:18,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 102 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:53:18,730 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 225 flow [2024-11-19 01:53:18,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-19 01:53:18,732 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-11-19 01:53:18,732 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 225 flow [2024-11-19 01:53:18,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:18,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:18,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:18,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:53:18,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:18,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:18,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1042999286, now seen corresponding path program 3 times [2024-11-19 01:53:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33535895] [2024-11-19 01:53:18,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:18,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:18,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:18,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:19,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33535895] [2024-11-19 01:53:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33535895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:19,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:19,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:53:19,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713290821] [2024-11-19 01:53:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:19,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:53:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:53:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:53:19,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:19,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:19,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:19,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:19,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:20,458 INFO L124 PetriNetUnfolderBase]: 19071/25436 cut-off events. [2024-11-19 01:53:20,458 INFO L125 PetriNetUnfolderBase]: For 29042/29122 co-relation queries the response was YES. [2024-11-19 01:53:20,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78961 conditions, 25436 events. 19071/25436 cut-off events. For 29042/29122 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 135212 event pairs, 6037 based on Foata normal form. 554/25473 useless extension candidates. Maximal degree in co-relation 30970. Up to 10546 conditions per place. [2024-11-19 01:53:20,750 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 90 selfloop transitions, 6 changer transitions 4/105 dead transitions. [2024-11-19 01:53:20,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 640 flow [2024-11-19 01:53:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:53:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:53:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-19 01:53:20,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-19 01:53:20,752 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 225 flow. Second operand 4 states and 106 transitions. [2024-11-19 01:53:20,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 640 flow [2024-11-19 01:53:20,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 105 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:53:20,768 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 271 flow [2024-11-19 01:53:20,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-19 01:53:20,769 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2024-11-19 01:53:20,769 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 271 flow [2024-11-19 01:53:20,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:20,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:20,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:20,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:53:20,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:20,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1240293748, now seen corresponding path program 4 times [2024-11-19 01:53:20,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:20,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839041068] [2024-11-19 01:53:20,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:20,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:20,783 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:20,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839041068] [2024-11-19 01:53:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839041068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339424321] [2024-11-19 01:53:20,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:20,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:20,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:20,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:20,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:53:20,926 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:20,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:20,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:53:20,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:20,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339424321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:21,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:21,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-19 01:53:21,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059881887] [2024-11-19 01:53:21,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:21,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:53:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:53:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:53:21,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:21,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:21,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:21,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:21,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:24,791 INFO L124 PetriNetUnfolderBase]: 37801/51563 cut-off events. [2024-11-19 01:53:24,792 INFO L125 PetriNetUnfolderBase]: For 92461/92561 co-relation queries the response was YES. [2024-11-19 01:53:24,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176515 conditions, 51563 events. 37801/51563 cut-off events. For 92461/92561 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 312221 event pairs, 1707 based on Foata normal form. 3806/54199 useless extension candidates. Maximal degree in co-relation 67032. Up to 9423 conditions per place. [2024-11-19 01:53:25,098 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 349 selfloop transitions, 126 changer transitions 15/495 dead transitions. [2024-11-19 01:53:25,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 495 transitions, 3543 flow [2024-11-19 01:53:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 01:53:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-19 01:53:25,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 626 transitions. [2024-11-19 01:53:25,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5796296296296296 [2024-11-19 01:53:25,101 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 271 flow. Second operand 27 states and 626 transitions. [2024-11-19 01:53:25,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 495 transitions, 3543 flow [2024-11-19 01:53:25,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 495 transitions, 3256 flow, removed 110 selfloop flow, removed 2 redundant places. [2024-11-19 01:53:25,148 INFO L231 Difference]: Finished difference. Result has 104 places, 173 transitions, 1437 flow [2024-11-19 01:53:25,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1437, PETRI_PLACES=104, PETRI_TRANSITIONS=173} [2024-11-19 01:53:25,148 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-11-19 01:53:25,148 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 173 transitions, 1437 flow [2024-11-19 01:53:25,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:25,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:25,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:25,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:53:25,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:25,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:25,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash 342787358, now seen corresponding path program 5 times [2024-11-19 01:53:25,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:25,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155949431] [2024-11-19 01:53:25,351 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:25,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:25,360 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:25,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:25,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155949431] [2024-11-19 01:53:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155949431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:53:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159626261] [2024-11-19 01:53:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:25,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:53:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:53:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:53:25,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:25,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 173 transitions, 1437 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:25,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:25,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:25,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:30,892 INFO L124 PetriNetUnfolderBase]: 42698/57417 cut-off events. [2024-11-19 01:53:30,892 INFO L125 PetriNetUnfolderBase]: For 574118/574762 co-relation queries the response was YES. [2024-11-19 01:53:31,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291736 conditions, 57417 events. 42698/57417 cut-off events. For 574118/574762 co-relation queries the response was YES. Maximal size of possible extension queue 1916. Compared 341554 event pairs, 11326 based on Foata normal form. 1422/57240 useless extension candidates. Maximal degree in co-relation 250397. Up to 29206 conditions per place. [2024-11-19 01:53:31,622 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 356 selfloop transitions, 47 changer transitions 0/408 dead transitions. [2024-11-19 01:53:31,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 408 transitions, 4329 flow [2024-11-19 01:53:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:53:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:53:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-19 01:53:31,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-19 01:53:31,623 INFO L175 Difference]: Start difference. First operand has 104 places, 173 transitions, 1437 flow. Second operand 4 states and 104 transitions. [2024-11-19 01:53:31,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 408 transitions, 4329 flow [2024-11-19 01:53:39,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 408 transitions, 4087 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-11-19 01:53:39,172 INFO L231 Difference]: Finished difference. Result has 106 places, 210 transitions, 1924 flow [2024-11-19 01:53:39,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1924, PETRI_PLACES=106, PETRI_TRANSITIONS=210} [2024-11-19 01:53:39,173 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2024-11-19 01:53:39,173 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 210 transitions, 1924 flow [2024-11-19 01:53:39,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:39,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:39,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:39,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:53:39,174 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:39,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1279401552, now seen corresponding path program 1 times [2024-11-19 01:53:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870779702] [2024-11-19 01:53:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:53:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:53:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:39,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870779702] [2024-11-19 01:53:39,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870779702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:39,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:53:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219136215] [2024-11-19 01:53:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:39,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:53:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:53:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:53:39,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:39,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 210 transitions, 1924 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:39,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:39,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:39,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:44,135 INFO L124 PetriNetUnfolderBase]: 41159/55230 cut-off events. [2024-11-19 01:53:44,135 INFO L125 PetriNetUnfolderBase]: For 578429/578865 co-relation queries the response was YES. [2024-11-19 01:53:44,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295731 conditions, 55230 events. 41159/55230 cut-off events. For 578429/578865 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 320135 event pairs, 15216 based on Foata normal form. 169/53942 useless extension candidates. Maximal degree in co-relation 258263. Up to 36667 conditions per place. [2024-11-19 01:53:44,813 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 192 selfloop transitions, 30 changer transitions 33/260 dead transitions. [2024-11-19 01:53:44,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 260 transitions, 2798 flow [2024-11-19 01:53:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:53:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:53:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-11-19 01:53:44,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-19 01:53:44,815 INFO L175 Difference]: Start difference. First operand has 106 places, 210 transitions, 1924 flow. Second operand 5 states and 124 transitions. [2024-11-19 01:53:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 260 transitions, 2798 flow [2024-11-19 01:53:54,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 260 transitions, 2698 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-11-19 01:53:54,292 INFO L231 Difference]: Finished difference. Result has 110 places, 204 transitions, 1875 flow [2024-11-19 01:53:54,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1875, PETRI_PLACES=110, PETRI_TRANSITIONS=204} [2024-11-19 01:53:54,292 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2024-11-19 01:53:54,293 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 204 transitions, 1875 flow [2024-11-19 01:53:54,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:54,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:54,293 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:53:54,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:53:54,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:53:54,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash -844656458, now seen corresponding path program 6 times [2024-11-19 01:53:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959984813] [2024-11-19 01:53:54,294 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:54,303 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:53:54,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:54,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:54,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959984813] [2024-11-19 01:53:54,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959984813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:53:54,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:53:54,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:53:54,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230687869] [2024-11-19 01:53:54,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:53:54,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:53:54,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:53:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:53:54,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:53:54,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 204 transitions, 1875 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:53:54,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:54,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:53:54,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:01,093 INFO L124 PetriNetUnfolderBase]: 53325/72141 cut-off events. [2024-11-19 01:54:01,094 INFO L125 PetriNetUnfolderBase]: For 777943/778263 co-relation queries the response was YES. [2024-11-19 01:54:01,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386203 conditions, 72141 events. 53325/72141 cut-off events. For 777943/778263 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 442271 event pairs, 16198 based on Foata normal form. 1044/71030 useless extension candidates. Maximal degree in co-relation 354042. Up to 32492 conditions per place. [2024-11-19 01:54:02,364 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 300 selfloop transitions, 23 changer transitions 11/339 dead transitions. [2024-11-19 01:54:02,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 339 transitions, 3741 flow [2024-11-19 01:54:02,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:54:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:54:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-19 01:54:02,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-19 01:54:02,365 INFO L175 Difference]: Start difference. First operand has 110 places, 204 transitions, 1875 flow. Second operand 4 states and 104 transitions. [2024-11-19 01:54:02,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 339 transitions, 3741 flow [2024-11-19 01:54:18,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 339 transitions, 3605 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-19 01:54:18,962 INFO L231 Difference]: Finished difference. Result has 109 places, 207 transitions, 1963 flow [2024-11-19 01:54:18,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1963, PETRI_PLACES=109, PETRI_TRANSITIONS=207} [2024-11-19 01:54:18,963 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2024-11-19 01:54:18,963 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 207 transitions, 1963 flow [2024-11-19 01:54:18,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:18,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:54:18,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:54:18,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:54:18,965 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:54:18,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:54:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1412285456, now seen corresponding path program 7 times [2024-11-19 01:54:18,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:54:18,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162684208] [2024-11-19 01:54:18,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:54:18,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:54:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:54:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:54:19,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:54:19,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162684208] [2024-11-19 01:54:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162684208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:54:19,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:54:19,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:54:19,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028736214] [2024-11-19 01:54:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:54:19,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:54:19,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:54:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:54:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:54:19,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:54:19,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 207 transitions, 1963 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:54:19,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:54:19,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:54:19,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:54:29,277 INFO L124 PetriNetUnfolderBase]: 81356/109618 cut-off events. [2024-11-19 01:54:29,277 INFO L125 PetriNetUnfolderBase]: For 1274581/1276081 co-relation queries the response was YES. [2024-11-19 01:54:30,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618134 conditions, 109618 events. 81356/109618 cut-off events. For 1274581/1276081 co-relation queries the response was YES. Maximal size of possible extension queue 3210. Compared 694847 event pairs, 26197 based on Foata normal form. 2208/107889 useless extension candidates. Maximal degree in co-relation 477010. Up to 56565 conditions per place. [2024-11-19 01:54:30,706 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 383 selfloop transitions, 26 changer transitions 27/441 dead transitions. [2024-11-19 01:54:30,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 441 transitions, 5135 flow [2024-11-19 01:54:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:54:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:54:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-19 01:54:30,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-19 01:54:30,707 INFO L175 Difference]: Start difference. First operand has 109 places, 207 transitions, 1963 flow. Second operand 5 states and 118 transitions. [2024-11-19 01:54:30,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 441 transitions, 5135 flow