./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-trans.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/chl-array-int-trans.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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:44:32,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:44:33,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:44:33,035 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:44:33,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:44:33,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:44:33,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:44:33,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:44:33,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:44:33,071 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:44:33,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:44:33,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:44:33,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:44:33,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:44:33,075 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:44:33,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:44:33,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:44:33,076 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:44:33,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:44:33,076 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:44:33,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:44:33,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:44:33,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:44:33,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:44:33,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:44:33,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:44:33,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:44:33,082 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:44:33,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:44:33,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:44:33,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:44:33,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:44:33,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:44:33,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:44:33,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:44:33,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:44:33,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:44:33,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:44:33,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:44:33,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:44:33,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:44:33,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:44:33,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2024-11-19 01:44:33,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:44:33,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:44:33,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:44:33,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:44:33,363 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:44:33,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-19 01:44:34,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:44:34,962 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:44:34,964 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2024-11-19 01:44:34,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72dc672e5/e622d6bc5dc84fdfb24bdc29714796cf/FLAGd44fdf99e [2024-11-19 01:44:34,992 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72dc672e5/e622d6bc5dc84fdfb24bdc29714796cf [2024-11-19 01:44:34,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:44:34,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:44:34,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:44:34,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:44:35,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:44:35,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:44:34" (1/1) ... [2024-11-19 01:44:35,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702fd45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35, skipping insertion in model container [2024-11-19 01:44:35,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:44:34" (1/1) ... [2024-11-19 01:44:35,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:44:35,249 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/chl-array-int-trans.wvr.c[2767,2780] [2024-11-19 01:44:35,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:44:35,271 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:44:35,292 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/chl-array-int-trans.wvr.c[2767,2780] [2024-11-19 01:44:35,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:44:35,313 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:44:35,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35 WrapperNode [2024-11-19 01:44:35,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:44:35,315 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:44:35,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:44:35,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:44:35,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,369 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 270 [2024-11-19 01:44:35,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:44:35,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:44:35,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:44:35,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:44:35,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,405 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-19 01:44:35,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:44:35,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:44:35,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:44:35,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:44:35,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (1/1) ... [2024-11-19 01:44:35,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:44:35,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:35,486 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 01:44:35,489 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 01:44:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:44:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:44:35,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:44:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:44:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:44:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:44:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:44:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:44:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:44:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:44:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:44:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:44:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:44:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:44:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:44:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:44:35,544 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 01:44:35,683 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:44:35,686 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:44:36,148 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:44:36,148 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:44:36,427 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:44:36,427 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 01:44:36,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:44:36 BoogieIcfgContainer [2024-11-19 01:44:36,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:44:36,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:44:36,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:44:36,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:44:36,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:44:34" (1/3) ... [2024-11-19 01:44:36,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3668d382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:44:36, skipping insertion in model container [2024-11-19 01:44:36,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:44:35" (2/3) ... [2024-11-19 01:44:36,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3668d382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:44:36, skipping insertion in model container [2024-11-19 01:44:36,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:44:36" (3/3) ... [2024-11-19 01:44:36,440 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2024-11-19 01:44:36,457 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:44:36,457 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:44:36,458 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:44:36,516 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:44:36,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 101 flow [2024-11-19 01:44:36,575 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-11-19 01:44:36,576 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:44:36,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 9/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-19 01:44:36,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 101 flow [2024-11-19 01:44:36,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 90 flow [2024-11-19 01:44:36,595 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:44:36,601 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;@6ecef00f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:44:36,601 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:44:36,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:44:36,618 INFO L124 PetriNetUnfolderBase]: 9/35 cut-off events. [2024-11-19 01:44:36,618 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:44:36,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:36,619 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] [2024-11-19 01:44:36,619 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 1 more)] === [2024-11-19 01:44:36,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:36,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1791323821, now seen corresponding path program 1 times [2024-11-19 01:44:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651550035] [2024-11-19 01:44:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:37,308 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 01:44:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651550035] [2024-11-19 01:44:37,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651550035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:37,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:37,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:37,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666948211] [2024-11-19 01:44:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:37,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:37,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:44:37,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:37,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 01:44:37,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:37,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:37,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:38,165 INFO L124 PetriNetUnfolderBase]: 2897/3947 cut-off events. [2024-11-19 01:44:38,166 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-19 01:44:38,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8176 conditions, 3947 events. 2897/3947 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16746 event pairs, 254 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 5265. Up to 1295 conditions per place. [2024-11-19 01:44:38,194 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 122 selfloop transitions, 13 changer transitions 2/138 dead transitions. [2024-11-19 01:44:38,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 138 transitions, 622 flow [2024-11-19 01:44:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-11-19 01:44:38,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-19 01:44:38,213 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 90 flow. Second operand 9 states and 174 transitions. [2024-11-19 01:44:38,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 138 transitions, 622 flow [2024-11-19 01:44:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 138 transitions, 574 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:44:38,225 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 156 flow [2024-11-19 01:44:38,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-11-19 01:44:38,230 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-19 01:44:38,231 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 156 flow [2024-11-19 01:44:38,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 01:44:38,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:38,233 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] [2024-11-19 01:44:38,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:44:38,233 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 1 more)] === [2024-11-19 01:44:38,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:38,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1504680807, now seen corresponding path program 2 times [2024-11-19 01:44:38,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:38,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441155482] [2024-11-19 01:44:38,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:38,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:38,273 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:38,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:38,464 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 01:44:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441155482] [2024-11-19 01:44:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441155482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:38,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:38,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:44:38,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977824736] [2024-11-19 01:44:38,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:38,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:38,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:38,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:44:38,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:38,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 01:44:38,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:38,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:38,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:39,168 INFO L124 PetriNetUnfolderBase]: 3338/4609 cut-off events. [2024-11-19 01:44:39,168 INFO L125 PetriNetUnfolderBase]: For 573/573 co-relation queries the response was YES. [2024-11-19 01:44:39,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10154 conditions, 4609 events. 3338/4609 cut-off events. For 573/573 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20971 event pairs, 339 based on Foata normal form. 1/3781 useless extension candidates. Maximal degree in co-relation 7203. Up to 1443 conditions per place. [2024-11-19 01:44:39,190 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 124 selfloop transitions, 15 changer transitions 2/142 dead transitions. [2024-11-19 01:44:39,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 142 transitions, 655 flow [2024-11-19 01:44:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-11-19 01:44:39,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-11-19 01:44:39,196 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 156 flow. Second operand 9 states and 176 transitions. [2024-11-19 01:44:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 142 transitions, 655 flow [2024-11-19 01:44:39,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 142 transitions, 653 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 01:44:39,203 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 218 flow [2024-11-19 01:44:39,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-11-19 01:44:39,206 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-11-19 01:44:39,206 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 218 flow [2024-11-19 01:44:39,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 01:44:39,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:39,206 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] [2024-11-19 01:44:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:44:39,207 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 1 more)] === [2024-11-19 01:44:39,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1891129723, now seen corresponding path program 1 times [2024-11-19 01:44:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156861499] [2024-11-19 01:44:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:39,404 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 01:44:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156861499] [2024-11-19 01:44:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156861499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:39,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800709418] [2024-11-19 01:44:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:39,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:39,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:39,409 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 01:44:39,411 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 01:44:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:39,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:44:39,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:39,675 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 01:44:39,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:39,780 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 01:44:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800709418] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:39,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2024-11-19 01:44:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203609952] [2024-11-19 01:44:39,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:39,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:39,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:44:39,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:39,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 01:44:39,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:39,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:39,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:40,497 INFO L124 PetriNetUnfolderBase]: 4570/6299 cut-off events. [2024-11-19 01:44:40,498 INFO L125 PetriNetUnfolderBase]: For 2968/2968 co-relation queries the response was YES. [2024-11-19 01:44:40,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14766 conditions, 6299 events. 4570/6299 cut-off events. For 2968/2968 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27897 event pairs, 2476 based on Foata normal form. 1/5189 useless extension candidates. Maximal degree in co-relation 10928. Up to 3282 conditions per place. [2024-11-19 01:44:40,528 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 119 selfloop transitions, 8 changer transitions 3/131 dead transitions. [2024-11-19 01:44:40,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 131 transitions, 693 flow [2024-11-19 01:44:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-11-19 01:44:40,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-19 01:44:40,530 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 218 flow. Second operand 7 states and 145 transitions. [2024-11-19 01:44:40,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 131 transitions, 693 flow [2024-11-19 01:44:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 676 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:40,538 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 247 flow [2024-11-19 01:44:40,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-19 01:44:40,539 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 20 predicate places. [2024-11-19 01:44:40,539 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 247 flow [2024-11-19 01:44:40,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 01:44:40,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:40,540 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] [2024-11-19 01:44:40,557 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 01:44:40,740 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 01:44:40,741 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 1 more)] === [2024-11-19 01:44:40,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash 421060979, now seen corresponding path program 1 times [2024-11-19 01:44:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073606205] [2024-11-19 01:44:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:40,848 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 01:44:40,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:40,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073606205] [2024-11-19 01:44:40,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073606205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:40,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:40,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:44:40,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380953859] [2024-11-19 01:44:40,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:40,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:40,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:40,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:40,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:40,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:40,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 01:44:40,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:40,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:40,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:41,598 INFO L124 PetriNetUnfolderBase]: 5454/7667 cut-off events. [2024-11-19 01:44:41,598 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-11-19 01:44:41,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18768 conditions, 7667 events. 5454/7667 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37517 event pairs, 2454 based on Foata normal form. 0/6755 useless extension candidates. Maximal degree in co-relation 15490. Up to 4606 conditions per place. [2024-11-19 01:44:41,645 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 99 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-11-19 01:44:41,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 111 transitions, 664 flow [2024-11-19 01:44:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-11-19 01:44:41,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-11-19 01:44:41,647 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 247 flow. Second operand 5 states and 99 transitions. [2024-11-19 01:44:41,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 111 transitions, 664 flow [2024-11-19 01:44:41,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 653 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:41,663 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 328 flow [2024-11-19 01:44:41,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-19 01:44:41,664 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2024-11-19 01:44:41,664 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 328 flow [2024-11-19 01:44:41,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 01:44:41,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:41,664 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] [2024-11-19 01:44:41,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:44:41,665 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 1 more)] === [2024-11-19 01:44:41,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1385803279, now seen corresponding path program 1 times [2024-11-19 01:44:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266673525] [2024-11-19 01:44:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:41,790 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 01:44:41,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:41,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266673525] [2024-11-19 01:44:41,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266673525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:41,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:41,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:41,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189876298] [2024-11-19 01:44:41,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:41,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:41,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:41,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:41,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:41,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:41,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 01:44:41,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:41,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:41,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:42,314 INFO L124 PetriNetUnfolderBase]: 3800/5442 cut-off events. [2024-11-19 01:44:42,314 INFO L125 PetriNetUnfolderBase]: For 4113/4113 co-relation queries the response was YES. [2024-11-19 01:44:42,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 5442 events. 3800/5442 cut-off events. For 4113/4113 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 26355 event pairs, 1572 based on Foata normal form. 0/5057 useless extension candidates. Maximal degree in co-relation 10643. Up to 2570 conditions per place. [2024-11-19 01:44:42,343 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 87 selfloop transitions, 6 changer transitions 5/99 dead transitions. [2024-11-19 01:44:42,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 600 flow [2024-11-19 01:44:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:42,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-11-19 01:44:42,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-11-19 01:44:42,347 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 328 flow. Second operand 5 states and 104 transitions. [2024-11-19 01:44:42,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 600 flow [2024-11-19 01:44:42,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 572 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:42,363 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 255 flow [2024-11-19 01:44:42,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-11-19 01:44:42,366 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-11-19 01:44:42,367 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 255 flow [2024-11-19 01:44:42,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 01:44:42,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:42,367 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 01:44:42,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:44:42,367 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 1 more)] === [2024-11-19 01:44:42,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash -139095454, now seen corresponding path program 1 times [2024-11-19 01:44:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211071916] [2024-11-19 01:44:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:42,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211071916] [2024-11-19 01:44:42,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211071916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:42,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:42,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:44:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116139476] [2024-11-19 01:44:42,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:42,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:42,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:42,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:42,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:42,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:42,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:43,265 INFO L124 PetriNetUnfolderBase]: 3820/5452 cut-off events. [2024-11-19 01:44:43,265 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-11-19 01:44:43,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 5452 events. 3820/5452 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26046 event pairs, 1320 based on Foata normal form. 2/5069 useless extension candidates. Maximal degree in co-relation 11209. Up to 2527 conditions per place. [2024-11-19 01:44:43,287 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 83 selfloop transitions, 5 changer transitions 59/148 dead transitions. [2024-11-19 01:44:43,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 148 transitions, 796 flow [2024-11-19 01:44:43,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:44:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:44:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-11-19 01:44:43,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-19 01:44:43,290 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 255 flow. Second operand 8 states and 170 transitions. [2024-11-19 01:44:43,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 148 transitions, 796 flow [2024-11-19 01:44:43,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 148 transitions, 783 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:43,302 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 239 flow [2024-11-19 01:44:43,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-19 01:44:43,304 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 33 predicate places. [2024-11-19 01:44:43,304 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 239 flow [2024-11-19 01:44:43,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:43,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:43,305 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 01:44:43,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:44:43,307 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 1 more)] === [2024-11-19 01:44:43,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash 49833286, now seen corresponding path program 2 times [2024-11-19 01:44:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:43,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011834374] [2024-11-19 01:44:43,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:43,330 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:43,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011834374] [2024-11-19 01:44:43,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011834374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:43,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:43,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:44:43,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063413259] [2024-11-19 01:44:43,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:43,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:43,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:43,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:43,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:43,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:43,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 01:44:43,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:43,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:43,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:43,938 INFO L124 PetriNetUnfolderBase]: 2582/3649 cut-off events. [2024-11-19 01:44:43,938 INFO L125 PetriNetUnfolderBase]: For 2694/2694 co-relation queries the response was YES. [2024-11-19 01:44:43,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9324 conditions, 3649 events. 2582/3649 cut-off events. For 2694/2694 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16059 event pairs, 1039 based on Foata normal form. 1/3360 useless extension candidates. Maximal degree in co-relation 9291. Up to 2205 conditions per place. [2024-11-19 01:44:43,953 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 58 selfloop transitions, 4 changer transitions 32/95 dead transitions. [2024-11-19 01:44:43,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 553 flow [2024-11-19 01:44:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-19 01:44:43,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-19 01:44:43,954 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 239 flow. Second operand 5 states and 103 transitions. [2024-11-19 01:44:43,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 553 flow [2024-11-19 01:44:43,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 525 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-19 01:44:43,963 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 181 flow [2024-11-19 01:44:43,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2024-11-19 01:44:43,965 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 27 predicate places. [2024-11-19 01:44:43,966 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 181 flow [2024-11-19 01:44:43,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 01:44:43,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:43,966 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 01:44:43,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:44:43,966 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 1 more)] === [2024-11-19 01:44:43,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash 958525617, now seen corresponding path program 1 times [2024-11-19 01:44:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:43,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381103261] [2024-11-19 01:44:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:44,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:44,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381103261] [2024-11-19 01:44:44,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381103261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:44,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:44,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821370919] [2024-11-19 01:44:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:44,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:44,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:44,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:44,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 181 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:44,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:44,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:45,102 INFO L124 PetriNetUnfolderBase]: 6830/9508 cut-off events. [2024-11-19 01:44:45,102 INFO L125 PetriNetUnfolderBase]: For 5162/5162 co-relation queries the response was YES. [2024-11-19 01:44:45,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23221 conditions, 9508 events. 6830/9508 cut-off events. For 5162/5162 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 46190 event pairs, 1404 based on Foata normal form. 4/8653 useless extension candidates. Maximal degree in co-relation 23192. Up to 2528 conditions per place. [2024-11-19 01:44:45,142 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 162 selfloop transitions, 16 changer transitions 14/193 dead transitions. [2024-11-19 01:44:45,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 193 transitions, 1105 flow [2024-11-19 01:44:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:44:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:44:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-11-19 01:44:45,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-19 01:44:45,144 INFO L175 Difference]: Start difference. First operand has 64 places, 45 transitions, 181 flow. Second operand 10 states and 204 transitions. [2024-11-19 01:44:45,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 193 transitions, 1105 flow [2024-11-19 01:44:45,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 193 transitions, 1030 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-11-19 01:44:45,155 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 326 flow [2024-11-19 01:44:45,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-11-19 01:44:45,156 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2024-11-19 01:44:45,156 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 326 flow [2024-11-19 01:44:45,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:45,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:45,157 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 01:44:45,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:44:45,157 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 1 more)] === [2024-11-19 01:44:45,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1403918089, now seen corresponding path program 2 times [2024-11-19 01:44:45,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745392349] [2024-11-19 01:44:45,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:45,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:45,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:45,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:45,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745392349] [2024-11-19 01:44:45,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745392349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:45,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:45,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:45,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328634170] [2024-11-19 01:44:45,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:45,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:45,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:45,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:45,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:45,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:45,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:45,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:45,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:46,361 INFO L124 PetriNetUnfolderBase]: 8872/12390 cut-off events. [2024-11-19 01:44:46,361 INFO L125 PetriNetUnfolderBase]: For 9537/9537 co-relation queries the response was YES. [2024-11-19 01:44:46,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32027 conditions, 12390 events. 8872/12390 cut-off events. For 9537/9537 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 64080 event pairs, 2410 based on Foata normal form. 4/11152 useless extension candidates. Maximal degree in co-relation 31996. Up to 4783 conditions per place. [2024-11-19 01:44:46,417 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 142 selfloop transitions, 22 changer transitions 12/177 dead transitions. [2024-11-19 01:44:46,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 177 transitions, 1105 flow [2024-11-19 01:44:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-19 01:44:46,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-19 01:44:46,419 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 326 flow. Second operand 9 states and 184 transitions. [2024-11-19 01:44:46,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 177 transitions, 1105 flow [2024-11-19 01:44:46,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 177 transitions, 1101 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:44:46,455 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 520 flow [2024-11-19 01:44:46,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=520, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-11-19 01:44:46,456 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 37 predicate places. [2024-11-19 01:44:46,456 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 520 flow [2024-11-19 01:44:46,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:46,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:46,456 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 01:44:46,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:44:46,456 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:46,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1537182999, now seen corresponding path program 3 times [2024-11-19 01:44:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044140703] [2024-11-19 01:44:46,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:44:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:46,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:44:46,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:46,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:46,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044140703] [2024-11-19 01:44:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044140703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:46,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:46,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663860274] [2024-11-19 01:44:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:46,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:46,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:46,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 520 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:46,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:46,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:48,015 INFO L124 PetriNetUnfolderBase]: 7914/11012 cut-off events. [2024-11-19 01:44:48,015 INFO L125 PetriNetUnfolderBase]: For 15385/15385 co-relation queries the response was YES. [2024-11-19 01:44:48,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30489 conditions, 11012 events. 7914/11012 cut-off events. For 15385/15385 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 55168 event pairs, 2399 based on Foata normal form. 4/9918 useless extension candidates. Maximal degree in co-relation 30452. Up to 3012 conditions per place. [2024-11-19 01:44:48,054 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 146 selfloop transitions, 19 changer transitions 18/184 dead transitions. [2024-11-19 01:44:48,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 184 transitions, 1320 flow [2024-11-19 01:44:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:44:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:44:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-11-19 01:44:48,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-11-19 01:44:48,056 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 520 flow. Second operand 9 states and 188 transitions. [2024-11-19 01:44:48,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 184 transitions, 1320 flow [2024-11-19 01:44:48,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 184 transitions, 1308 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 01:44:48,115 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 604 flow [2024-11-19 01:44:48,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=604, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-19 01:44:48,116 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 47 predicate places. [2024-11-19 01:44:48,116 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 604 flow [2024-11-19 01:44:48,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 01:44:48,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:48,116 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 01:44:48,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:44:48,117 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:48,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1082164752, now seen corresponding path program 1 times [2024-11-19 01:44:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993344076] [2024-11-19 01:44:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:48,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:48,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993344076] [2024-11-19 01:44:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993344076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:48,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597004707] [2024-11-19 01:44:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:48,299 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 01:44:48,300 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 01:44:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:48,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:44:48,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:48,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:48,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597004707] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:48,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:48,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 16 [2024-11-19 01:44:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605448671] [2024-11-19 01:44:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:48,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:44:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:44:48,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:44:48,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:48,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 01:44:48,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:48,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:49,495 INFO L124 PetriNetUnfolderBase]: 6578/9032 cut-off events. [2024-11-19 01:44:49,495 INFO L125 PetriNetUnfolderBase]: For 17358/17358 co-relation queries the response was YES. [2024-11-19 01:44:49,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26265 conditions, 9032 events. 6578/9032 cut-off events. For 17358/17358 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 43301 event pairs, 2761 based on Foata normal form. 2/8164 useless extension candidates. Maximal degree in co-relation 26223. Up to 5316 conditions per place. [2024-11-19 01:44:49,528 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 117 selfloop transitions, 18 changer transitions 4/140 dead transitions. [2024-11-19 01:44:49,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 140 transitions, 1118 flow [2024-11-19 01:44:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:44:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:44:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-19 01:44:49,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-19 01:44:49,530 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 604 flow. Second operand 7 states and 132 transitions. [2024-11-19 01:44:49,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 140 transitions, 1118 flow [2024-11-19 01:44:49,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 1057 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-19 01:44:49,596 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 595 flow [2024-11-19 01:44:49,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2024-11-19 01:44:49,597 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 51 predicate places. [2024-11-19 01:44:49,597 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 595 flow [2024-11-19 01:44:49,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 01:44:49,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:49,598 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, 1] [2024-11-19 01:44:49,615 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 01:44:49,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 01:44:49,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:49,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash 54250219, now seen corresponding path program 1 times [2024-11-19 01:44:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:49,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119724081] [2024-11-19 01:44:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:49,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119724081] [2024-11-19 01:44:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119724081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27857121] [2024-11-19 01:44:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:49,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:49,955 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:49,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:44:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:50,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:44:50,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:50,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:44:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27857121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:50,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:50,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-19 01:44:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201695103] [2024-11-19 01:44:50,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:50,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:44:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:44:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:44:50,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:50,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 595 flow. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 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) [2024-11-19 01:44:50,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:50,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:50,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:52,066 INFO L124 PetriNetUnfolderBase]: 13772/19004 cut-off events. [2024-11-19 01:44:52,066 INFO L125 PetriNetUnfolderBase]: For 33620/33620 co-relation queries the response was YES. [2024-11-19 01:44:52,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55290 conditions, 19004 events. 13772/19004 cut-off events. For 33620/33620 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 103748 event pairs, 5398 based on Foata normal form. 2/17266 useless extension candidates. Maximal degree in co-relation 50443. Up to 7880 conditions per place. [2024-11-19 01:44:52,141 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 242 selfloop transitions, 17 changer transitions 7/267 dead transitions. [2024-11-19 01:44:52,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 267 transitions, 2491 flow [2024-11-19 01:44:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:44:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:44:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-11-19 01:44:52,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4096153846153846 [2024-11-19 01:44:52,143 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 595 flow. Second operand 13 states and 213 transitions. [2024-11-19 01:44:52,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 267 transitions, 2491 flow [2024-11-19 01:44:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 267 transitions, 2312 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-11-19 01:44:52,299 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 691 flow [2024-11-19 01:44:52,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=691, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-11-19 01:44:52,299 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 61 predicate places. [2024-11-19 01:44:52,300 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 691 flow [2024-11-19 01:44:52,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 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) [2024-11-19 01:44:52,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:52,300 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, 1] [2024-11-19 01:44:52,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:44:52,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:52,501 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:52,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:52,501 INFO L85 PathProgramCache]: Analyzing trace with hash 814005590, now seen corresponding path program 1 times [2024-11-19 01:44:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068660950] [2024-11-19 01:44:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:52,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:52,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068660950] [2024-11-19 01:44:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068660950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:52,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:52,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:44:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158561673] [2024-11-19 01:44:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:52,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:52,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:52,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:52,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:44:52,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:52,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:52,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:53,777 INFO L124 PetriNetUnfolderBase]: 9596/13628 cut-off events. [2024-11-19 01:44:53,778 INFO L125 PetriNetUnfolderBase]: For 18789/18789 co-relation queries the response was YES. [2024-11-19 01:44:53,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38081 conditions, 13628 events. 9596/13628 cut-off events. For 18789/18789 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 74283 event pairs, 4051 based on Foata normal form. 636/13605 useless extension candidates. Maximal degree in co-relation 33768. Up to 6870 conditions per place. [2024-11-19 01:44:53,834 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 50 selfloop transitions, 4 changer transitions 64/119 dead transitions. [2024-11-19 01:44:53,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 936 flow [2024-11-19 01:44:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:44:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:44:53,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-11-19 01:44:53,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-19 01:44:53,836 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 691 flow. Second operand 6 states and 105 transitions. [2024-11-19 01:44:53,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 936 flow [2024-11-19 01:44:53,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 894 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-19 01:44:53,966 INFO L231 Difference]: Finished difference. Result has 99 places, 55 transitions, 289 flow [2024-11-19 01:44:53,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=99, PETRI_TRANSITIONS=55} [2024-11-19 01:44:53,967 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 62 predicate places. [2024-11-19 01:44:53,967 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 55 transitions, 289 flow [2024-11-19 01:44:53,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 01:44:53,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:53,967 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, 1, 1] [2024-11-19 01:44:53,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:44:53,968 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:53,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1757971129, now seen corresponding path program 1 times [2024-11-19 01:44:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:53,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022774775] [2024-11-19 01:44:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:44:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022774775] [2024-11-19 01:44:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022774775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:44:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224290137] [2024-11-19 01:44:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:54,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:44:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:44:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:44:54,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:54,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 55 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 01:44:54,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:54,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:54,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:54,622 INFO L124 PetriNetUnfolderBase]: 3381/4805 cut-off events. [2024-11-19 01:44:54,622 INFO L125 PetriNetUnfolderBase]: For 6236/6236 co-relation queries the response was YES. [2024-11-19 01:44:54,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13154 conditions, 4805 events. 3381/4805 cut-off events. For 6236/6236 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21483 event pairs, 1677 based on Foata normal form. 111/4706 useless extension candidates. Maximal degree in co-relation 13123. Up to 3147 conditions per place. [2024-11-19 01:44:54,639 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 45 selfloop transitions, 4 changer transitions 44/94 dead transitions. [2024-11-19 01:44:54,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 94 transitions, 613 flow [2024-11-19 01:44:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:44:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:44:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-11-19 01:44:54,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-11-19 01:44:54,640 INFO L175 Difference]: Start difference. First operand has 99 places, 55 transitions, 289 flow. Second operand 5 states and 91 transitions. [2024-11-19 01:44:54,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 94 transitions, 613 flow [2024-11-19 01:44:54,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 564 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-11-19 01:44:54,657 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 220 flow [2024-11-19 01:44:54,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-19 01:44:54,658 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-11-19 01:44:54,658 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 220 flow [2024-11-19 01:44:54,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 01:44:54,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:54,658 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, 1, 1] [2024-11-19 01:44:54,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:44:54,659 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:54,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 401019306, now seen corresponding path program 1 times [2024-11-19 01:44:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:54,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394722044] [2024-11-19 01:44:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:54,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394722044] [2024-11-19 01:44:54,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394722044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:54,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254604539] [2024-11-19 01:44:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:54,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:54,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:54,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:54,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:44:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:54,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:44:54,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:55,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254604539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:44:55,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:44:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-19 01:44:55,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212595987] [2024-11-19 01:44:55,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:44:55,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:44:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:55,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:44:55,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:44:55,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:55,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 220 flow. Second operand has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 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 01:44:55,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:55,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:55,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:56,191 INFO L124 PetriNetUnfolderBase]: 6599/9085 cut-off events. [2024-11-19 01:44:56,191 INFO L125 PetriNetUnfolderBase]: For 5648/5648 co-relation queries the response was YES. [2024-11-19 01:44:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23398 conditions, 9085 events. 6599/9085 cut-off events. For 5648/5648 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 43614 event pairs, 556 based on Foata normal form. 4/8725 useless extension candidates. Maximal degree in co-relation 23373. Up to 2661 conditions per place. [2024-11-19 01:44:56,219 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 152 selfloop transitions, 26 changer transitions 8/187 dead transitions. [2024-11-19 01:44:56,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 187 transitions, 1070 flow [2024-11-19 01:44:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:44:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:44:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 221 transitions. [2024-11-19 01:44:56,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36833333333333335 [2024-11-19 01:44:56,220 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 220 flow. Second operand 15 states and 221 transitions. [2024-11-19 01:44:56,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 187 transitions, 1070 flow [2024-11-19 01:44:56,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 187 transitions, 1010 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-19 01:44:56,260 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 371 flow [2024-11-19 01:44:56,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=371, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-19 01:44:56,261 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 41 predicate places. [2024-11-19 01:44:56,261 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 371 flow [2024-11-19 01:44:56,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.777777777777778) internal successors, (140), 18 states have internal predecessors, (140), 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 01:44:56,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:56,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:44:56,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:44:56,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 01:44:56,466 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:56,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2045295074, now seen corresponding path program 2 times [2024-11-19 01:44:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:56,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076709396] [2024-11-19 01:44:56,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:44:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:56,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:44:56,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:44:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 01:44:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076709396] [2024-11-19 01:44:56,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076709396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:44:56,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:44:56,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:44:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351458409] [2024-11-19 01:44:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:56,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:44:56,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:44:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:44:56,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:56,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 371 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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 01:44:56,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:56,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:56,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:44:58,966 INFO L124 PetriNetUnfolderBase]: 21372/29489 cut-off events. [2024-11-19 01:44:58,967 INFO L125 PetriNetUnfolderBase]: For 21049/21049 co-relation queries the response was YES. [2024-11-19 01:44:59,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75741 conditions, 29489 events. 21372/29489 cut-off events. For 21049/21049 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 173098 event pairs, 1666 based on Foata normal form. 4/25480 useless extension candidates. Maximal degree in co-relation 75716. Up to 8535 conditions per place. [2024-11-19 01:44:59,098 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 235 selfloop transitions, 31 changer transitions 12/279 dead transitions. [2024-11-19 01:44:59,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 279 transitions, 1742 flow [2024-11-19 01:44:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:44:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:44:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-11-19 01:44:59,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5590909090909091 [2024-11-19 01:44:59,100 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 371 flow. Second operand 11 states and 246 transitions. [2024-11-19 01:44:59,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 279 transitions, 1742 flow [2024-11-19 01:44:59,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 279 transitions, 1712 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-19 01:44:59,129 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 664 flow [2024-11-19 01:44:59,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=664, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-19 01:44:59,130 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 57 predicate places. [2024-11-19 01:44:59,130 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 664 flow [2024-11-19 01:44:59,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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 01:44:59,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:44:59,130 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, 1, 1, 1] [2024-11-19 01:44:59,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:44:59,131 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:44:59,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:44:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1208647190, now seen corresponding path program 1 times [2024-11-19 01:44:59,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:44:59,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775778188] [2024-11-19 01:44:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:44:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:59,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:44:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775778188] [2024-11-19 01:44:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775778188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200006820] [2024-11-19 01:44:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:44:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:44:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:44:59,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:44:59,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:44:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:44:59,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:44:59,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:44:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:59,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:44:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:44:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200006820] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:44:59,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:44:59,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-19 01:44:59,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414707786] [2024-11-19 01:44:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:44:59,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:44:59,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:44:59,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:44:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:44:59,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:44:59,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 664 flow. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 01:44:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:44:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:44:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:02,975 INFO L124 PetriNetUnfolderBase]: 28371/39646 cut-off events. [2024-11-19 01:45:02,976 INFO L125 PetriNetUnfolderBase]: For 83187/83187 co-relation queries the response was YES. [2024-11-19 01:45:03,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125748 conditions, 39646 events. 28371/39646 cut-off events. For 83187/83187 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 238832 event pairs, 11279 based on Foata normal form. 0/38200 useless extension candidates. Maximal degree in co-relation 125714. Up to 20876 conditions per place. [2024-11-19 01:45:03,297 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 123 selfloop transitions, 17 changer transitions 0/141 dead transitions. [2024-11-19 01:45:03,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 141 transitions, 1297 flow [2024-11-19 01:45:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:45:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:45:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-19 01:45:03,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30357142857142855 [2024-11-19 01:45:03,298 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 664 flow. Second operand 7 states and 85 transitions. [2024-11-19 01:45:03,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 141 transitions, 1297 flow [2024-11-19 01:45:03,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 1259 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-19 01:45:03,619 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 702 flow [2024-11-19 01:45:03,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=702, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2024-11-19 01:45:03,620 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 64 predicate places. [2024-11-19 01:45:03,620 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 702 flow [2024-11-19 01:45:03,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 01:45:03,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:03,620 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, 1, 1, 1, 1] [2024-11-19 01:45:03,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:45:03,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:45:03,821 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:03,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1574670030, now seen corresponding path program 1 times [2024-11-19 01:45:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:03,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101636080] [2024-11-19 01:45:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:03,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:45:05,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101636080] [2024-11-19 01:45:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101636080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147480825] [2024-11-19 01:45:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:05,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:05,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:05,103 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:05,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:45:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:05,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:45:05,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:05,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:45:05,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2024-11-19 01:45:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:45:05,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:45:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147480825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:45:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2024-11-19 01:45:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529205540] [2024-11-19 01:45:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:05,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:45:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:45:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:45:05,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:45:05,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 702 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 01:45:05,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:05,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:45:05,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:10,994 INFO L124 PetriNetUnfolderBase]: 39861/56416 cut-off events. [2024-11-19 01:45:10,995 INFO L125 PetriNetUnfolderBase]: For 128770/128770 co-relation queries the response was YES. [2024-11-19 01:45:11,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188834 conditions, 56416 events. 39861/56416 cut-off events. For 128770/128770 co-relation queries the response was YES. Maximal size of possible extension queue 2275. Compared 375557 event pairs, 9973 based on Foata normal form. 4/56420 useless extension candidates. Maximal degree in co-relation 188798. Up to 22317 conditions per place. [2024-11-19 01:45:11,509 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 181 selfloop transitions, 40 changer transitions 8/230 dead transitions. [2024-11-19 01:45:11,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 230 transitions, 1936 flow [2024-11-19 01:45:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:45:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:45:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-11-19 01:45:11,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4575 [2024-11-19 01:45:11,511 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 702 flow. Second operand 10 states and 183 transitions. [2024-11-19 01:45:11,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 230 transitions, 1936 flow [2024-11-19 01:45:11,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 230 transitions, 1888 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 01:45:11,981 INFO L231 Difference]: Finished difference. Result has 111 places, 114 transitions, 996 flow [2024-11-19 01:45:11,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=996, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2024-11-19 01:45:11,981 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 74 predicate places. [2024-11-19 01:45:11,981 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 996 flow [2024-11-19 01:45:11,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 01:45:11,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:11,982 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:45:11,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 01:45:12,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:45:12,182 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:12,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:12,183 INFO L85 PathProgramCache]: Analyzing trace with hash -489780158, now seen corresponding path program 1 times [2024-11-19 01:45:12,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:12,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676976810] [2024-11-19 01:45:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:45:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676976810] [2024-11-19 01:45:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676976810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995299396] [2024-11-19 01:45:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:45:12,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:12,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:45:12,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:45:12,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:45:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:45:12,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 01:45:12,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:45:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:45:12,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:45:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:45:12,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995299396] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:45:12,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:45:12,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2024-11-19 01:45:12,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862276720] [2024-11-19 01:45:12,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:12,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:45:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:45:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:45:12,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:45:12,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 996 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 01:45:12,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:12,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:45:12,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:18,184 INFO L124 PetriNetUnfolderBase]: 36372/51460 cut-off events. [2024-11-19 01:45:18,185 INFO L125 PetriNetUnfolderBase]: For 179534/179534 co-relation queries the response was YES. [2024-11-19 01:45:18,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187103 conditions, 51460 events. 36372/51460 cut-off events. For 179534/179534 co-relation queries the response was YES. Maximal size of possible extension queue 1918. Compared 331501 event pairs, 15373 based on Foata normal form. 2954/54414 useless extension candidates. Maximal degree in co-relation 187061. Up to 33679 conditions per place. [2024-11-19 01:45:18,838 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 100 selfloop transitions, 33 changer transitions 0/134 dead transitions. [2024-11-19 01:45:18,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 134 transitions, 1365 flow [2024-11-19 01:45:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:45:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:45:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-11-19 01:45:18,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3107142857142857 [2024-11-19 01:45:18,839 INFO L175 Difference]: Start difference. First operand has 111 places, 114 transitions, 996 flow. Second operand 7 states and 87 transitions. [2024-11-19 01:45:18,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 134 transitions, 1365 flow [2024-11-19 01:45:20,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 134 transitions, 1317 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-11-19 01:45:20,388 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 1016 flow [2024-11-19 01:45:20,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2024-11-19 01:45:20,389 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 73 predicate places. [2024-11-19 01:45:20,389 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 1016 flow [2024-11-19 01:45:20,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 01:45:20,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:20,389 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, 1, 1, 1, 1] [2024-11-19 01:45:20,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 01:45:20,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:45:20,590 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:20,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -740293082, now seen corresponding path program 2 times [2024-11-19 01:45:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386521333] [2024-11-19 01:45:20,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:45:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:20,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:45:20,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:45:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386521333] [2024-11-19 01:45:21,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386521333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:45:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732599106] [2024-11-19 01:45:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:21,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:45:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:45:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:45:21,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:45:21,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 1016 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 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 01:45:21,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:21,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:45:21,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:45:27,044 INFO L124 PetriNetUnfolderBase]: 37062/52570 cut-off events. [2024-11-19 01:45:27,044 INFO L125 PetriNetUnfolderBase]: For 206744/206744 co-relation queries the response was YES. [2024-11-19 01:45:27,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202052 conditions, 52570 events. 37062/52570 cut-off events. For 206744/206744 co-relation queries the response was YES. Maximal size of possible extension queue 2009. Compared 345781 event pairs, 11445 based on Foata normal form. 4/52574 useless extension candidates. Maximal degree in co-relation 202010. Up to 21064 conditions per place. [2024-11-19 01:45:27,678 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 191 selfloop transitions, 34 changer transitions 9/235 dead transitions. [2024-11-19 01:45:27,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 235 transitions, 2310 flow [2024-11-19 01:45:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:45:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:45:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-11-19 01:45:27,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-11-19 01:45:27,679 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 1016 flow. Second operand 12 states and 188 transitions. [2024-11-19 01:45:27,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 235 transitions, 2310 flow [2024-11-19 01:45:28,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 235 transitions, 2258 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 01:45:28,161 INFO L231 Difference]: Finished difference. Result has 123 places, 122 transitions, 1299 flow [2024-11-19 01:45:28,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1299, PETRI_PLACES=123, PETRI_TRANSITIONS=122} [2024-11-19 01:45:28,161 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 86 predicate places. [2024-11-19 01:45:28,161 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 122 transitions, 1299 flow [2024-11-19 01:45:28,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 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 01:45:28,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:45:28,161 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, 1, 1, 1, 1] [2024-11-19 01:45:28,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:45:28,162 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:45:28,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:45:28,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1209511428, now seen corresponding path program 3 times [2024-11-19 01:45:28,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:45:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800191936] [2024-11-19 01:45:28,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:45:28,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:45:28,198 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:45:28,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:45:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 01:45:28,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:45:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800191936] [2024-11-19 01:45:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800191936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:45:28,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:45:28,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:45:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99856425] [2024-11-19 01:45:28,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:45:28,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:45:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:45:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:45:28,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:45:28,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 40 [2024-11-19 01:45:28,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 1299 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 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 01:45:28,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:45:28,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 40 [2024-11-19 01:45:28,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand