./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:28:14,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:28:14,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:28:14,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:28:14,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:28:14,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:28:14,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:28:14,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:28:14,866 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:28:14,870 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:28:14,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:28:14,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:28:14,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:28:14,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:28:14,871 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:28:14,872 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:28:14,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:28:14,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:28:14,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:28:14,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:28:14,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:28:14,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:28:14,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:28:14,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:28:14,874 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:28:14,875 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:28:14,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:28:14,875 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:28:14,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:28:14,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:28:14,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:28:14,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:28:14,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:28:14,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:28:14,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:28:14,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:28:14,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:28:14,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:28:14,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:28:14,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:28:14,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:28:14,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:28:14,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2024-11-22 13:28:15,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:28:15,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:28:15,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:28:15,156 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:28:15,156 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:28:15,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-22 13:28:16,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:28:16,596 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:28:16,596 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2024-11-22 13:28:16,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13004b7ff/6321f13114ec4632b64848bfc4220d4e/FLAG520696270 [2024-11-22 13:28:16,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13004b7ff/6321f13114ec4632b64848bfc4220d4e [2024-11-22 13:28:16,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:28:16,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:28:16,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:28:16,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:28:16,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:28:16,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:28:16" (1/1) ... [2024-11-22 13:28:16,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf6ac6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:16, skipping insertion in model container [2024-11-22 13:28:16,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:28:16" (1/1) ... [2024-11-22 13:28:17,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:28:17,242 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/pthread/triangular-longer-2.i[30963,30976] [2024-11-22 13:28:17,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:28:17,252 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:28:17,294 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/pthread/triangular-longer-2.i[30963,30976] [2024-11-22 13:28:17,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:28:17,326 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:28:17,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17 WrapperNode [2024-11-22 13:28:17,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:28:17,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:28:17,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:28:17,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:28:17,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,368 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-22 13:28:17,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:28:17,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:28:17,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:28:17,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:28:17,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,415 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 13:28:17,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:28:17,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:28:17,431 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:28:17,431 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:28:17,432 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (1/1) ... [2024-11-22 13:28:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:28:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:17,467 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) [2024-11-22 13:28:17,470 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 [2024-11-22 13:28:17,521 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-22 13:28:17,521 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-22 13:28:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-22 13:28:17,522 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-22 13:28:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 13:28:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:28:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:28:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 13:28:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:28:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:28:17,525 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:28:17,635 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:28:17,637 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:28:17,725 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:28:17,725 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:28:17,805 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:28:17,806 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 13:28:17,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:28:17 BoogieIcfgContainer [2024-11-22 13:28:17,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:28:17,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:28:17,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:28:17,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:28:17,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:28:16" (1/3) ... [2024-11-22 13:28:17,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c21758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:28:17, skipping insertion in model container [2024-11-22 13:28:17,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:28:17" (2/3) ... [2024-11-22 13:28:17,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c21758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:28:17, skipping insertion in model container [2024-11-22 13:28:17,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:28:17" (3/3) ... [2024-11-22 13:28:17,815 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2024-11-22 13:28:17,828 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:28:17,829 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:28:17,829 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:28:17,866 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:28:17,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-22 13:28:17,910 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-22 13:28:17,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:28:17,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-22 13:28:17,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-22 13:28:17,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-22 13:28:17,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:28:17,931 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;@37c25a5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:28:17,932 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:28:17,941 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:28:17,945 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-22 13:28:17,945 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:28:17,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:17,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:17,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:17,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-11-22 13:28:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:17,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635569534] [2024-11-22 13:28:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:17,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:18,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:18,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635569534] [2024-11-22 13:28:18,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635569534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:18,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:18,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:28:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706006836] [2024-11-22 13:28:18,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:18,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:28:18,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:28:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:28:18,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:18,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-11-22 13:28:18,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:18,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:18,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:18,571 INFO L124 PetriNetUnfolderBase]: 385/647 cut-off events. [2024-11-22 13:28:18,571 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 13:28:18,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 647 events. 385/647 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2667 event pairs, 57 based on Foata normal form. 15/646 useless extension candidates. Maximal degree in co-relation 1251. Up to 303 conditions per place. [2024-11-22 13:28:18,577 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 29 selfloop transitions, 7 changer transitions 31/70 dead transitions. [2024-11-22 13:28:18,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 70 transitions, 283 flow [2024-11-22 13:28:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:28:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:28:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-11-22 13:28:18,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-11-22 13:28:18,622 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 8 states and 111 transitions. [2024-11-22 13:28:18,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 70 transitions, 283 flow [2024-11-22 13:28:18,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 70 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:28:18,646 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 97 flow [2024-11-22 13:28:18,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2024-11-22 13:28:18,651 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2024-11-22 13:28:18,651 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 97 flow [2024-11-22 13:28:18,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-11-22 13:28:18,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:18,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:18,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:28:18,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:18,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:18,656 INFO L85 PathProgramCache]: Analyzing trace with hash -517073457, now seen corresponding path program 1 times [2024-11-22 13:28:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688193481] [2024-11-22 13:28:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688193481] [2024-11-22 13:28:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688193481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:18,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:18,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:28:18,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920656545] [2024-11-22 13:28:18,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:18,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:28:18,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:28:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:28:18,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:18,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-22 13:28:18,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:18,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:18,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:18,958 INFO L124 PetriNetUnfolderBase]: 247/446 cut-off events. [2024-11-22 13:28:18,959 INFO L125 PetriNetUnfolderBase]: For 416/422 co-relation queries the response was YES. [2024-11-22 13:28:18,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 446 events. 247/446 cut-off events. For 416/422 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1792 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 1158. Up to 190 conditions per place. [2024-11-22 13:28:18,964 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 27 selfloop transitions, 8 changer transitions 15/53 dead transitions. [2024-11-22 13:28:18,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 291 flow [2024-11-22 13:28:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:28:18,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:28:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-11-22 13:28:18,967 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-22 13:28:18,967 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 97 flow. Second operand 6 states and 76 transitions. [2024-11-22 13:28:18,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 291 flow [2024-11-22 13:28:18,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 287 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 13:28:18,971 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 141 flow [2024-11-22 13:28:18,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-11-22 13:28:18,972 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2024-11-22 13:28:18,972 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 141 flow [2024-11-22 13:28:18,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-22 13:28:18,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:18,972 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:18,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:28:18,973 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:18,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-11-22 13:28:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364687494] [2024-11-22 13:28:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:18,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:19,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:19,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364687494] [2024-11-22 13:28:19,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364687494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:19,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:19,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:28:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386628422] [2024-11-22 13:28:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:19,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:28:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:28:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:28:19,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:19,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-22 13:28:19,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:19,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:19,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:19,266 INFO L124 PetriNetUnfolderBase]: 391/713 cut-off events. [2024-11-22 13:28:19,267 INFO L125 PetriNetUnfolderBase]: For 1184/1190 co-relation queries the response was YES. [2024-11-22 13:28:19,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 713 events. 391/713 cut-off events. For 1184/1190 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3059 event pairs, 89 based on Foata normal form. 33/745 useless extension candidates. Maximal degree in co-relation 2098. Up to 264 conditions per place. [2024-11-22 13:28:19,272 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 47 selfloop transitions, 11 changer transitions 20/81 dead transitions. [2024-11-22 13:28:19,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 81 transitions, 515 flow [2024-11-22 13:28:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:28:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:28:19,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-22 13:28:19,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-22 13:28:19,274 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 141 flow. Second operand 9 states and 117 transitions. [2024-11-22 13:28:19,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 81 transitions, 515 flow [2024-11-22 13:28:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 81 transitions, 473 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-11-22 13:28:19,278 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 237 flow [2024-11-22 13:28:19,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-11-22 13:28:19,279 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-22 13:28:19,280 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 237 flow [2024-11-22 13:28:19,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-22 13:28:19,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:19,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:19,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:28:19,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:19,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-11-22 13:28:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455212548] [2024-11-22 13:28:19,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:28:19,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:19,291 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:28:19,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:19,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:19,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455212548] [2024-11-22 13:28:19,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455212548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:19,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:19,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:28:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007956126] [2024-11-22 13:28:19,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:19,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:28:19,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:19,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:28:19,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:28:19,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:19,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-22 13:28:19,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:19,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:19,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:19,547 INFO L124 PetriNetUnfolderBase]: 328/608 cut-off events. [2024-11-22 13:28:19,547 INFO L125 PetriNetUnfolderBase]: For 1943/1949 co-relation queries the response was YES. [2024-11-22 13:28:19,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 608 events. 328/608 cut-off events. For 1943/1949 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2541 event pairs, 89 based on Foata normal form. 51/658 useless extension candidates. Maximal degree in co-relation 2020. Up to 234 conditions per place. [2024-11-22 13:28:19,550 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 11 changer transitions 28/80 dead transitions. [2024-11-22 13:28:19,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 609 flow [2024-11-22 13:28:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:28:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 13:28:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-22 13:28:19,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-22 13:28:19,552 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 237 flow. Second operand 8 states and 103 transitions. [2024-11-22 13:28:19,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 609 flow [2024-11-22 13:28:19,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 565 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-22 13:28:19,558 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 268 flow [2024-11-22 13:28:19,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2024-11-22 13:28:19,560 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2024-11-22 13:28:19,560 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 268 flow [2024-11-22 13:28:19,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-22 13:28:19,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:19,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:19,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:28:19,561 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:19,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash 134530067, now seen corresponding path program 1 times [2024-11-22 13:28:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910661480] [2024-11-22 13:28:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910661480] [2024-11-22 13:28:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910661480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:19,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:19,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:28:19,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383240637] [2024-11-22 13:28:19,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:19,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:28:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:28:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:28:19,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:19,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-22 13:28:19,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:19,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:19,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:19,864 INFO L124 PetriNetUnfolderBase]: 463/851 cut-off events. [2024-11-22 13:28:19,864 INFO L125 PetriNetUnfolderBase]: For 4064/4070 co-relation queries the response was YES. [2024-11-22 13:28:19,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 851 events. 463/851 cut-off events. For 4064/4070 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3751 event pairs, 65 based on Foata normal form. 33/881 useless extension candidates. Maximal degree in co-relation 3135. Up to 181 conditions per place. [2024-11-22 13:28:19,868 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 54 selfloop transitions, 20 changer transitions 23/100 dead transitions. [2024-11-22 13:28:19,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 100 transitions, 818 flow [2024-11-22 13:28:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:28:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:28:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-22 13:28:19,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-22 13:28:19,869 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 268 flow. Second operand 11 states and 141 transitions. [2024-11-22 13:28:19,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 100 transitions, 818 flow [2024-11-22 13:28:19,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 100 transitions, 723 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-11-22 13:28:19,874 INFO L231 Difference]: Finished difference. Result has 63 places, 42 transitions, 378 flow [2024-11-22 13:28:19,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=378, PETRI_PLACES=63, PETRI_TRANSITIONS=42} [2024-11-22 13:28:19,874 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 37 predicate places. [2024-11-22 13:28:19,875 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 42 transitions, 378 flow [2024-11-22 13:28:19,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-22 13:28:19,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:19,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:19,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:28:19,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:19,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 2 times [2024-11-22 13:28:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670239700] [2024-11-22 13:28:19,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:28:19,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:19,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:28:19,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670239700] [2024-11-22 13:28:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670239700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:19,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:28:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700948858] [2024-11-22 13:28:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:19,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:28:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:28:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:28:19,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:19,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 42 transitions, 378 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-22 13:28:19,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:19,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:19,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:20,159 INFO L124 PetriNetUnfolderBase]: 400/749 cut-off events. [2024-11-22 13:28:20,159 INFO L125 PetriNetUnfolderBase]: For 5302/5308 co-relation queries the response was YES. [2024-11-22 13:28:20,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 749 events. 400/749 cut-off events. For 5302/5308 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3284 event pairs, 65 based on Foata normal form. 51/797 useless extension candidates. Maximal degree in co-relation 3003. Up to 151 conditions per place. [2024-11-22 13:28:20,163 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 41 selfloop transitions, 20 changer transitions 31/95 dead transitions. [2024-11-22 13:28:20,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 902 flow [2024-11-22 13:28:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:28:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:28:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-11-22 13:28:20,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-22 13:28:20,165 INFO L175 Difference]: Start difference. First operand has 63 places, 42 transitions, 378 flow. Second operand 10 states and 125 transitions. [2024-11-22 13:28:20,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 902 flow [2024-11-22 13:28:20,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 793 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-11-22 13:28:20,172 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 398 flow [2024-11-22 13:28:20,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=398, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2024-11-22 13:28:20,173 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2024-11-22 13:28:20,173 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 398 flow [2024-11-22 13:28:20,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-22 13:28:20,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:20,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:20,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:28:20,174 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:20,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 3 times [2024-11-22 13:28:20,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:20,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283543575] [2024-11-22 13:28:20,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:28:20,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:20,180 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:28:20,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:20,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:20,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283543575] [2024-11-22 13:28:20,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283543575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:28:20,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:28:20,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:28:20,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033047748] [2024-11-22 13:28:20,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:28:20,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:28:20,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:20,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:28:20,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:28:20,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:20,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-22 13:28:20,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:20,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:20,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:20,455 INFO L124 PetriNetUnfolderBase]: 409/755 cut-off events. [2024-11-22 13:28:20,456 INFO L125 PetriNetUnfolderBase]: For 5090/5096 co-relation queries the response was YES. [2024-11-22 13:28:20,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 755 events. 409/755 cut-off events. For 5090/5096 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3374 event pairs, 116 based on Foata normal form. 24/778 useless extension candidates. Maximal degree in co-relation 3028. Up to 363 conditions per place. [2024-11-22 13:28:20,460 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 52 selfloop transitions, 16 changer transitions 25/96 dead transitions. [2024-11-22 13:28:20,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 882 flow [2024-11-22 13:28:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:28:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:28:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-11-22 13:28:20,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-22 13:28:20,461 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 398 flow. Second operand 11 states and 135 transitions. [2024-11-22 13:28:20,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 882 flow [2024-11-22 13:28:20,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 798 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-11-22 13:28:20,471 INFO L231 Difference]: Finished difference. Result has 71 places, 46 transitions, 433 flow [2024-11-22 13:28:20,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=433, PETRI_PLACES=71, PETRI_TRANSITIONS=46} [2024-11-22 13:28:20,472 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2024-11-22 13:28:20,473 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 46 transitions, 433 flow [2024-11-22 13:28:20,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2024-11-22 13:28:20,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:20,474 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:20,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:28:20,474 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:20,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1423899474, now seen corresponding path program 1 times [2024-11-22 13:28:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:20,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630715517] [2024-11-22 13:28:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:20,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630715517] [2024-11-22 13:28:20,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630715517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889132102] [2024-11-22 13:28:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:20,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:20,589 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) [2024-11-22 13:28:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:28:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:20,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 13:28:20,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:20,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:20,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889132102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:20,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:20,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-22 13:28:20,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222935771] [2024-11-22 13:28:20,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:20,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:28:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:28:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:28:20,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:20,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 46 transitions, 433 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-11-22 13:28:20,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:20,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:20,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:21,239 INFO L124 PetriNetUnfolderBase]: 643/1166 cut-off events. [2024-11-22 13:28:21,240 INFO L125 PetriNetUnfolderBase]: For 9744/9750 co-relation queries the response was YES. [2024-11-22 13:28:21,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 1166 events. 643/1166 cut-off events. For 9744/9750 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5061 event pairs, 59 based on Foata normal form. 51/1214 useless extension candidates. Maximal degree in co-relation 4944. Up to 207 conditions per place. [2024-11-22 13:28:21,248 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 66 selfloop transitions, 35 changer transitions 56/160 dead transitions. [2024-11-22 13:28:21,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 160 transitions, 1559 flow [2024-11-22 13:28:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 13:28:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 13:28:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 236 transitions. [2024-11-22 13:28:21,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-11-22 13:28:21,250 INFO L175 Difference]: Start difference. First operand has 71 places, 46 transitions, 433 flow. Second operand 19 states and 236 transitions. [2024-11-22 13:28:21,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 160 transitions, 1559 flow [2024-11-22 13:28:21,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 160 transitions, 1482 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-11-22 13:28:21,263 INFO L231 Difference]: Finished difference. Result has 90 places, 62 transitions, 781 flow [2024-11-22 13:28:21,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=781, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2024-11-22 13:28:21,265 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2024-11-22 13:28:21,265 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 781 flow [2024-11-22 13:28:21,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-11-22 13:28:21,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:21,266 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:21,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:28:21,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:21,467 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:21,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:21,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1514895422, now seen corresponding path program 1 times [2024-11-22 13:28:21,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:21,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941344497] [2024-11-22 13:28:21,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941344497] [2024-11-22 13:28:21,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941344497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599091228] [2024-11-22 13:28:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:28:21,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:21,608 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) [2024-11-22 13:28:21,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:28:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:21,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:28:21,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:21,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:21,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599091228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:21,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:21,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 13:28:21,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162562996] [2024-11-22 13:28:21,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:21,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:28:21,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:28:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:28:21,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:21,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 781 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2024-11-22 13:28:21,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:21,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:21,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:22,499 INFO L124 PetriNetUnfolderBase]: 841/1577 cut-off events. [2024-11-22 13:28:22,499 INFO L125 PetriNetUnfolderBase]: For 23238/23244 co-relation queries the response was YES. [2024-11-22 13:28:22,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7809 conditions, 1577 events. 841/1577 cut-off events. For 23238/23244 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6922 event pairs, 215 based on Foata normal form. 87/1663 useless extension candidates. Maximal degree in co-relation 7765. Up to 756 conditions per place. [2024-11-22 13:28:22,507 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 95 selfloop transitions, 25 changer transitions 89/212 dead transitions. [2024-11-22 13:28:22,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 212 transitions, 2565 flow [2024-11-22 13:28:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 13:28:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 13:28:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 301 transitions. [2024-11-22 13:28:22,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5016666666666667 [2024-11-22 13:28:22,508 INFO L175 Difference]: Start difference. First operand has 90 places, 62 transitions, 781 flow. Second operand 25 states and 301 transitions. [2024-11-22 13:28:22,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 212 transitions, 2565 flow [2024-11-22 13:28:22,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 212 transitions, 2040 flow, removed 249 selfloop flow, removed 10 redundant places. [2024-11-22 13:28:22,531 INFO L231 Difference]: Finished difference. Result has 118 places, 76 transitions, 882 flow [2024-11-22 13:28:22,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=882, PETRI_PLACES=118, PETRI_TRANSITIONS=76} [2024-11-22 13:28:22,531 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-22 13:28:22,531 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 76 transitions, 882 flow [2024-11-22 13:28:22,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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) [2024-11-22 13:28:22,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:22,532 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:22,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:28:22,732 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,SelfDestructingSolverStorable8 [2024-11-22 13:28:22,733 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:22,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2021366800, now seen corresponding path program 2 times [2024-11-22 13:28:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:22,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488153373] [2024-11-22 13:28:22,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:28:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:22,740 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:28:22,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488153373] [2024-11-22 13:28:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488153373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288277445] [2024-11-22 13:28:22,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:28:22,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:22,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:22,847 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) [2024-11-22 13:28:22,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:28:22,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:28:22,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:22,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:28:22,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:22,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288277445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:23,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:23,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 13:28:23,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145119670] [2024-11-22 13:28:23,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:23,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:28:23,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:28:23,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:28:23,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:23,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 76 transitions, 882 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-11-22 13:28:23,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:23,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:23,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:23,817 INFO L124 PetriNetUnfolderBase]: 1435/2711 cut-off events. [2024-11-22 13:28:23,817 INFO L125 PetriNetUnfolderBase]: For 73809/73815 co-relation queries the response was YES. [2024-11-22 13:28:23,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15196 conditions, 2711 events. 1435/2711 cut-off events. For 73809/73815 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14454 event pairs, 136 based on Foata normal form. 87/2797 useless extension candidates. Maximal degree in co-relation 15139. Up to 501 conditions per place. [2024-11-22 13:28:23,837 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 127 selfloop transitions, 80 changer transitions 91/301 dead transitions. [2024-11-22 13:28:23,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 301 transitions, 4066 flow [2024-11-22 13:28:23,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 13:28:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-22 13:28:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 393 transitions. [2024-11-22 13:28:23,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2024-11-22 13:28:23,840 INFO L175 Difference]: Start difference. First operand has 118 places, 76 transitions, 882 flow. Second operand 32 states and 393 transitions. [2024-11-22 13:28:23,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 301 transitions, 4066 flow [2024-11-22 13:28:23,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 301 transitions, 3452 flow, removed 299 selfloop flow, removed 13 redundant places. [2024-11-22 13:28:23,896 INFO L231 Difference]: Finished difference. Result has 150 places, 119 transitions, 1713 flow [2024-11-22 13:28:23,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1713, PETRI_PLACES=150, PETRI_TRANSITIONS=119} [2024-11-22 13:28:23,897 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 124 predicate places. [2024-11-22 13:28:23,898 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 119 transitions, 1713 flow [2024-11-22 13:28:23,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-11-22 13:28:23,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:23,898 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:23,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 13:28:24,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:24,099 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:24,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash -983284332, now seen corresponding path program 3 times [2024-11-22 13:28:24,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:24,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201384773] [2024-11-22 13:28:24,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:28:24,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:24,109 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 13:28:24,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201384773] [2024-11-22 13:28:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201384773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560929223] [2024-11-22 13:28:24,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:28:24,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:24,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:24,218 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) [2024-11-22 13:28:24,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:28:24,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 13:28:24,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:24,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 13:28:24,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:24,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560929223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:24,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-22 13:28:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709558868] [2024-11-22 13:28:24,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:24,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:28:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:28:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:28:24,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:24,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 119 transitions, 1713 flow. Second operand has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2024-11-22 13:28:24,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:24,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:24,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:25,382 INFO L124 PetriNetUnfolderBase]: 1822/3429 cut-off events. [2024-11-22 13:28:25,382 INFO L125 PetriNetUnfolderBase]: For 164399/164405 co-relation queries the response was YES. [2024-11-22 13:28:25,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22480 conditions, 3429 events. 1822/3429 cut-off events. For 164399/164405 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19239 event pairs, 58 based on Foata normal form. 123/3551 useless extension candidates. Maximal degree in co-relation 22408. Up to 657 conditions per place. [2024-11-22 13:28:25,407 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 124 selfloop transitions, 121 changer transitions 115/363 dead transitions. [2024-11-22 13:28:25,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 363 transitions, 6090 flow [2024-11-22 13:28:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-22 13:28:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-22 13:28:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 443 transitions. [2024-11-22 13:28:25,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5127314814814815 [2024-11-22 13:28:25,409 INFO L175 Difference]: Start difference. First operand has 150 places, 119 transitions, 1713 flow. Second operand 36 states and 443 transitions. [2024-11-22 13:28:25,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 363 transitions, 6090 flow [2024-11-22 13:28:25,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 363 transitions, 5182 flow, removed 440 selfloop flow, removed 16 redundant places. [2024-11-22 13:28:25,640 INFO L231 Difference]: Finished difference. Result has 183 places, 154 transitions, 2571 flow [2024-11-22 13:28:25,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2571, PETRI_PLACES=183, PETRI_TRANSITIONS=154} [2024-11-22 13:28:25,641 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2024-11-22 13:28:25,641 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 154 transitions, 2571 flow [2024-11-22 13:28:25,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2024-11-22 13:28:25,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:25,642 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:25,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 13:28:25,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:25,843 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:25,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:25,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2083707491, now seen corresponding path program 4 times [2024-11-22 13:28:25,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:25,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363495673] [2024-11-22 13:28:25,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:28:25,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:25,851 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:28:25,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:25,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363495673] [2024-11-22 13:28:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363495673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810812701] [2024-11-22 13:28:25,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:28:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:25,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:25,981 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) [2024-11-22 13:28:25,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:28:26,021 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:28:26,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:26,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 13:28:26,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:26,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:28:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810812701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:26,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:26,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-22 13:28:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503096508] [2024-11-22 13:28:26,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:26,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 13:28:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 13:28:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:28:26,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:26,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 154 transitions, 2571 flow. Second operand has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 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) [2024-11-22 13:28:26,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:26,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:26,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:27,857 INFO L124 PetriNetUnfolderBase]: 2632/4896 cut-off events. [2024-11-22 13:28:27,857 INFO L125 PetriNetUnfolderBase]: For 356048/356054 co-relation queries the response was YES. [2024-11-22 13:28:27,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38206 conditions, 4896 events. 2632/4896 cut-off events. For 356048/356054 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 26543 event pairs, 89 based on Foata normal form. 105/4998 useless extension candidates. Maximal degree in co-relation 38120. Up to 975 conditions per place. [2024-11-22 13:28:27,938 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 164 selfloop transitions, 176 changer transitions 146/489 dead transitions. [2024-11-22 13:28:27,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 489 transitions, 10254 flow [2024-11-22 13:28:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-22 13:28:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-22 13:28:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 602 transitions. [2024-11-22 13:28:27,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-22 13:28:27,943 INFO L175 Difference]: Start difference. First operand has 183 places, 154 transitions, 2571 flow. Second operand 49 states and 602 transitions. [2024-11-22 13:28:27,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 489 transitions, 10254 flow [2024-11-22 13:28:28,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 489 transitions, 8546 flow, removed 824 selfloop flow, removed 20 redundant places. [2024-11-22 13:28:28,245 INFO L231 Difference]: Finished difference. Result has 233 places, 215 transitions, 4157 flow [2024-11-22 13:28:28,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=4157, PETRI_PLACES=233, PETRI_TRANSITIONS=215} [2024-11-22 13:28:28,245 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-11-22 13:28:28,246 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 215 transitions, 4157 flow [2024-11-22 13:28:28,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 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) [2024-11-22 13:28:28,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:28,246 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:28,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 13:28:28,446 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,SelfDestructingSolverStorable11 [2024-11-22 13:28:28,447 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:28,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1465053042, now seen corresponding path program 5 times [2024-11-22 13:28:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:28,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939054386] [2024-11-22 13:28:28,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:28:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:28,464 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 13:28:28,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:28,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939054386] [2024-11-22 13:28:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939054386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531208659] [2024-11-22 13:28:28,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:28:28,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:28,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:28,819 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) [2024-11-22 13:28:28,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:28:28,876 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 13:28:28,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:28,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 13:28:28,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:29,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:29,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531208659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:29,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:29,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-22 13:28:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290191785] [2024-11-22 13:28:29,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:29,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 13:28:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:29,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 13:28:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 13:28:29,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:29,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 215 transitions, 4157 flow. Second operand has 41 states, 41 states have (on average 7.121951219512195) internal successors, (292), 41 states have internal predecessors, (292), 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) [2024-11-22 13:28:29,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:29,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:29,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:30,916 INFO L124 PetriNetUnfolderBase]: 2704/5162 cut-off events. [2024-11-22 13:28:30,916 INFO L125 PetriNetUnfolderBase]: For 548905/548911 co-relation queries the response was YES. [2024-11-22 13:28:30,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43935 conditions, 5162 events. 2704/5162 cut-off events. For 548905/548911 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 28994 event pairs, 1013 based on Foata normal form. 69/5230 useless extension candidates. Maximal degree in co-relation 43827. Up to 3618 conditions per place. [2024-11-22 13:28:30,966 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 261 selfloop transitions, 45 changer transitions 95/404 dead transitions. [2024-11-22 13:28:30,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 404 transitions, 9623 flow [2024-11-22 13:28:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 13:28:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-22 13:28:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 385 transitions. [2024-11-22 13:28:30,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-22 13:28:30,970 INFO L175 Difference]: Start difference. First operand has 233 places, 215 transitions, 4157 flow. Second operand 33 states and 385 transitions. [2024-11-22 13:28:30,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 404 transitions, 9623 flow [2024-11-22 13:28:31,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 404 transitions, 7126 flow, removed 1227 selfloop flow, removed 17 redundant places. [2024-11-22 13:28:31,667 INFO L231 Difference]: Finished difference. Result has 252 places, 231 transitions, 3701 flow [2024-11-22 13:28:31,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3701, PETRI_PLACES=252, PETRI_TRANSITIONS=231} [2024-11-22 13:28:31,668 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 226 predicate places. [2024-11-22 13:28:31,668 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 231 transitions, 3701 flow [2024-11-22 13:28:31,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.121951219512195) internal successors, (292), 41 states have internal predecessors, (292), 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) [2024-11-22 13:28:31,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:31,669 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:31,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:28:31,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:31,869 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:31,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash 883715938, now seen corresponding path program 6 times [2024-11-22 13:28:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:31,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359886682] [2024-11-22 13:28:31,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:28:31,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:31,896 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 13:28:31,896 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359886682] [2024-11-22 13:28:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359886682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:32,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868360951] [2024-11-22 13:28:32,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:28:32,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:32,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:32,282 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) [2024-11-22 13:28:32,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:28:32,332 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 13:28:32,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:32,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 13:28:32,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:32,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:32,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868360951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:32,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:32,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-22 13:28:32,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098033564] [2024-11-22 13:28:32,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:32,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 13:28:32,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 13:28:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 13:28:32,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:32,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 231 transitions, 3701 flow. Second operand has 41 states, 41 states have (on average 7.146341463414634) internal successors, (293), 41 states have internal predecessors, (293), 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) [2024-11-22 13:28:32,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:32,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:32,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:34,813 INFO L124 PetriNetUnfolderBase]: 3208/6315 cut-off events. [2024-11-22 13:28:34,813 INFO L125 PetriNetUnfolderBase]: For 534394/534400 co-relation queries the response was YES. [2024-11-22 13:28:34,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47945 conditions, 6315 events. 3208/6315 cut-off events. For 534394/534400 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 37943 event pairs, 596 based on Foata normal form. 69/6383 useless extension candidates. Maximal degree in co-relation 47832. Up to 2398 conditions per place. [2024-11-22 13:28:34,870 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 265 selfloop transitions, 165 changer transitions 135/568 dead transitions. [2024-11-22 13:28:34,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 568 transitions, 10808 flow [2024-11-22 13:28:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-22 13:28:34,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-22 13:28:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 614 transitions. [2024-11-22 13:28:34,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4827044025157233 [2024-11-22 13:28:34,877 INFO L175 Difference]: Start difference. First operand has 252 places, 231 transitions, 3701 flow. Second operand 53 states and 614 transitions. [2024-11-22 13:28:34,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 568 transitions, 10808 flow [2024-11-22 13:28:35,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 568 transitions, 10049 flow, removed 354 selfloop flow, removed 21 redundant places. [2024-11-22 13:28:35,813 INFO L231 Difference]: Finished difference. Result has 295 places, 287 transitions, 4983 flow [2024-11-22 13:28:35,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4983, PETRI_PLACES=295, PETRI_TRANSITIONS=287} [2024-11-22 13:28:35,814 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 269 predicate places. [2024-11-22 13:28:35,814 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 287 transitions, 4983 flow [2024-11-22 13:28:35,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.146341463414634) internal successors, (293), 41 states have internal predecessors, (293), 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) [2024-11-22 13:28:35,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:35,815 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:35,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 13:28:36,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:36,018 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:36,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:36,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1701672936, now seen corresponding path program 7 times [2024-11-22 13:28:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:36,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10537418] [2024-11-22 13:28:36,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:28:36,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:36,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10537418] [2024-11-22 13:28:36,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10537418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854125664] [2024-11-22 13:28:36,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:28:36,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:36,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:36,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:28:36,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:28:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:28:36,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 13:28:36,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:36,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854125664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:36,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-22 13:28:36,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414022251] [2024-11-22 13:28:36,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:36,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-22 13:28:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-22 13:28:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 13:28:36,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:36,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 287 transitions, 4983 flow. Second operand has 42 states, 42 states have (on average 7.142857142857143) internal successors, (300), 42 states have internal predecessors, (300), 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) [2024-11-22 13:28:36,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:36,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:36,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:39,780 INFO L124 PetriNetUnfolderBase]: 4099/8332 cut-off events. [2024-11-22 13:28:39,780 INFO L125 PetriNetUnfolderBase]: For 905406/905412 co-relation queries the response was YES. [2024-11-22 13:28:39,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70190 conditions, 8332 events. 4099/8332 cut-off events. For 905406/905412 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 54577 event pairs, 288 based on Foata normal form. 87/8418 useless extension candidates. Maximal degree in co-relation 70064. Up to 1947 conditions per place. [2024-11-22 13:28:39,849 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 239 selfloop transitions, 309 changer transitions 157/708 dead transitions. [2024-11-22 13:28:39,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 708 transitions, 15141 flow [2024-11-22 13:28:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-22 13:28:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-22 13:28:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 694 transitions. [2024-11-22 13:28:39,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4901129943502825 [2024-11-22 13:28:39,852 INFO L175 Difference]: Start difference. First operand has 295 places, 287 transitions, 4983 flow. Second operand 59 states and 694 transitions. [2024-11-22 13:28:39,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 708 transitions, 15141 flow [2024-11-22 13:28:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 708 transitions, 13664 flow, removed 640 selfloop flow, removed 29 redundant places. [2024-11-22 13:28:41,574 INFO L231 Difference]: Finished difference. Result has 340 places, 384 transitions, 7386 flow [2024-11-22 13:28:41,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7386, PETRI_PLACES=340, PETRI_TRANSITIONS=384} [2024-11-22 13:28:41,575 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 314 predicate places. [2024-11-22 13:28:41,575 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 384 transitions, 7386 flow [2024-11-22 13:28:41,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.142857142857143) internal successors, (300), 42 states have internal predecessors, (300), 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) [2024-11-22 13:28:41,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:41,575 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:41,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 13:28:41,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 13:28:41,776 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:41,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash -861598898, now seen corresponding path program 8 times [2024-11-22 13:28:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:41,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012892410] [2024-11-22 13:28:41,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:28:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:41,784 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:28:41,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012892410] [2024-11-22 13:28:42,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012892410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016697718] [2024-11-22 13:28:42,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:28:42,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:42,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:42,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:28:42,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:28:42,137 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:28:42,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:42,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 13:28:42,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:42,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:42,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016697718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:42,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:42,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-11-22 13:28:42,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178015490] [2024-11-22 13:28:42,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:42,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 13:28:42,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:42,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 13:28:42,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 13:28:42,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:42,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 384 transitions, 7386 flow. Second operand has 41 states, 41 states have (on average 7.146341463414634) internal successors, (293), 41 states have internal predecessors, (293), 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) [2024-11-22 13:28:42,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:42,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:42,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:45,963 INFO L124 PetriNetUnfolderBase]: 5143/10444 cut-off events. [2024-11-22 13:28:45,963 INFO L125 PetriNetUnfolderBase]: For 1551652/1551658 co-relation queries the response was YES. [2024-11-22 13:28:46,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97699 conditions, 10444 events. 5143/10444 cut-off events. For 1551652/1551658 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 72210 event pairs, 150 based on Foata normal form. 87/10530 useless extension candidates. Maximal degree in co-relation 97556. Up to 2499 conditions per place. [2024-11-22 13:28:46,069 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 222 selfloop transitions, 422 changer transitions 157/804 dead transitions. [2024-11-22 13:28:46,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 804 transitions, 18543 flow [2024-11-22 13:28:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-22 13:28:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-22 13:28:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 704 transitions. [2024-11-22 13:28:46,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4971751412429379 [2024-11-22 13:28:46,071 INFO L175 Difference]: Start difference. First operand has 340 places, 384 transitions, 7386 flow. Second operand 59 states and 704 transitions. [2024-11-22 13:28:46,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 804 transitions, 18543 flow [2024-11-22 13:28:49,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 804 transitions, 15884 flow, removed 1181 selfloop flow, removed 31 redundant places. [2024-11-22 13:28:49,481 INFO L231 Difference]: Finished difference. Result has 384 places, 480 transitions, 9434 flow [2024-11-22 13:28:49,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5931, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=9434, PETRI_PLACES=384, PETRI_TRANSITIONS=480} [2024-11-22 13:28:49,481 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 358 predicate places. [2024-11-22 13:28:49,481 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 480 transitions, 9434 flow [2024-11-22 13:28:49,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.146341463414634) internal successors, (293), 41 states have internal predecessors, (293), 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) [2024-11-22 13:28:49,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:49,482 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:49,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 13:28:49,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 13:28:49,683 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:28:49,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:28:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash 803351984, now seen corresponding path program 9 times [2024-11-22 13:28:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:28:49,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236463067] [2024-11-22 13:28:49,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:28:49,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:28:49,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-22 13:28:49,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:49,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:28:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236463067] [2024-11-22 13:28:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236463067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:28:49,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381303601] [2024-11-22 13:28:49,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:28:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:28:49,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:28:49,979 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:28:49,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:28:50,028 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-22 13:28:50,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:28:50,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 13:28:50,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:28:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:50,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:28:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:28:50,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381303601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:28:50,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:28:50,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-22 13:28:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646989697] [2024-11-22 13:28:50,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:28:50,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-22 13:28:50,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:28:50,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-22 13:28:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 13:28:50,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:28:50,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 480 transitions, 9434 flow. Second operand has 42 states, 42 states have (on average 7.142857142857143) internal successors, (300), 42 states have internal predecessors, (300), 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) [2024-11-22 13:28:50,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:28:50,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:28:50,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:28:54,717 INFO L124 PetriNetUnfolderBase]: 5917/11880 cut-off events. [2024-11-22 13:28:54,718 INFO L125 PetriNetUnfolderBase]: For 2030900/2030906 co-relation queries the response was YES. [2024-11-22 13:28:54,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117443 conditions, 11880 events. 5917/11880 cut-off events. For 2030900/2030906 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 83660 event pairs, 66 based on Foata normal form. 96/11975 useless extension candidates. Maximal degree in co-relation 117282. Up to 2811 conditions per place. [2024-11-22 13:28:54,844 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 216 selfloop transitions, 494 changer transitions 162/875 dead transitions. [2024-11-22 13:28:54,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 875 transitions, 21133 flow [2024-11-22 13:28:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-22 13:28:54,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-22 13:28:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 727 transitions. [2024-11-22 13:28:54,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5048611111111111 [2024-11-22 13:28:54,846 INFO L175 Difference]: Start difference. First operand has 384 places, 480 transitions, 9434 flow. Second operand 60 states and 727 transitions. [2024-11-22 13:28:54,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 875 transitions, 21133 flow [2024-11-22 13:28:59,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 875 transitions, 18581 flow, removed 1090 selfloop flow, removed 34 redundant places. [2024-11-22 13:28:59,833 INFO L231 Difference]: Finished difference. Result has 423 places, 539 transitions, 11008 flow [2024-11-22 13:28:59,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7796, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=11008, PETRI_PLACES=423, PETRI_TRANSITIONS=539} [2024-11-22 13:28:59,834 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 397 predicate places. [2024-11-22 13:28:59,834 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 539 transitions, 11008 flow [2024-11-22 13:28:59,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.142857142857143) internal successors, (300), 42 states have internal predecessors, (300), 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) [2024-11-22 13:28:59,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:28:59,835 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:28:59,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 13:29:00,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 13:29:00,035 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:29:00,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:29:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash 219903135, now seen corresponding path program 10 times [2024-11-22 13:29:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:29:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047580711] [2024-11-22 13:29:00,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:29:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:29:00,044 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:29:00,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:29:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:29:00,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:29:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047580711] [2024-11-22 13:29:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047580711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:29:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004347267] [2024-11-22 13:29:00,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:29:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:29:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:29:00,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:29:00,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:29:00,328 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:29:00,328 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:29:00,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 13:29:00,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:29:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:29:00,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:29:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:29:00,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004347267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:29:00,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:29:00,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2024-11-22 13:29:00,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962506565] [2024-11-22 13:29:00,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:29:00,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-22 13:29:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:29:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-22 13:29:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 13:29:00,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:29:00,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 539 transitions, 11008 flow. Second operand has 43 states, 43 states have (on average 7.116279069767442) internal successors, (306), 43 states have internal predecessors, (306), 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) [2024-11-22 13:29:00,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:29:00,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:29:00,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:29:04,832 INFO L124 PetriNetUnfolderBase]: 6052/12223 cut-off events. [2024-11-22 13:29:04,832 INFO L125 PetriNetUnfolderBase]: For 2520122/2520128 co-relation queries the response was YES. [2024-11-22 13:29:04,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127217 conditions, 12223 events. 6052/12223 cut-off events. For 2520122/2520128 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86731 event pairs, 203 based on Foata normal form. 33/12253 useless extension candidates. Maximal degree in co-relation 127042. Up to 2865 conditions per place. [2024-11-22 13:29:05,014 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 224 selfloop transitions, 479 changer transitions 87/793 dead transitions. [2024-11-22 13:29:05,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 793 transitions, 19196 flow [2024-11-22 13:29:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 13:29:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-22 13:29:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 524 transitions. [2024-11-22 13:29:05,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5077519379844961 [2024-11-22 13:29:05,016 INFO L175 Difference]: Start difference. First operand has 423 places, 539 transitions, 11008 flow. Second operand 43 states and 524 transitions. [2024-11-22 13:29:05,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 793 transitions, 19196 flow [2024-11-22 13:29:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 793 transitions, 15939 flow, removed 1325 selfloop flow, removed 42 redundant places. [2024-11-22 13:29:11,202 INFO L231 Difference]: Finished difference. Result has 420 places, 557 transitions, 10903 flow [2024-11-22 13:29:11,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9077, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10903, PETRI_PLACES=420, PETRI_TRANSITIONS=557} [2024-11-22 13:29:11,203 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 394 predicate places. [2024-11-22 13:29:11,203 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 557 transitions, 10903 flow [2024-11-22 13:29:11,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.116279069767442) internal successors, (306), 43 states have internal predecessors, (306), 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) [2024-11-22 13:29:11,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:29:11,203 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:29:11,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 13:29:11,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 13:29:11,404 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:29:11,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:29:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash -716409703, now seen corresponding path program 11 times [2024-11-22 13:29:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:29:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206026436] [2024-11-22 13:29:11,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:29:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:29:11,416 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 13:29:11,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:29:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:29:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:29:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206026436] [2024-11-22 13:29:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206026436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:29:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549244669] [2024-11-22 13:29:11,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:29:11,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:29:11,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:29:11,654 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:29:11,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:29:11,703 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 13:29:11,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:29:11,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 13:29:11,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:29:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:29:11,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:29:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 13:29:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549244669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:29:12,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:29:12,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-11-22 13:29:12,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468019470] [2024-11-22 13:29:12,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:29:12,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-22 13:29:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:29:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-22 13:29:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 13:29:12,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 13:29:12,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 557 transitions, 10903 flow. Second operand has 44 states, 44 states have (on average 7.113636363636363) internal successors, (313), 44 states have internal predecessors, (313), 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) [2024-11-22 13:29:12,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:29:12,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 13:29:12,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:29:15,990 INFO L124 PetriNetUnfolderBase]: 6025/12180 cut-off events. [2024-11-22 13:29:15,991 INFO L125 PetriNetUnfolderBase]: For 1979494/1979500 co-relation queries the response was YES. [2024-11-22 13:29:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115380 conditions, 12180 events. 6025/12180 cut-off events. For 1979494/1979500 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 86392 event pairs, 152 based on Foata normal form. 51/12230 useless extension candidates. Maximal degree in co-relation 115207. Up to 2841 conditions per place. [2024-11-22 13:29:16,138 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 210 selfloop transitions, 492 changer transitions 101/806 dead transitions. [2024-11-22 13:29:16,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 806 transitions, 17877 flow [2024-11-22 13:29:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-22 13:29:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-22 13:29:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 546 transitions. [2024-11-22 13:29:16,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-11-22 13:29:16,142 INFO L175 Difference]: Start difference. First operand has 420 places, 557 transitions, 10903 flow. Second operand 45 states and 546 transitions. [2024-11-22 13:29:16,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 806 transitions, 17877 flow [2024-11-22 13:29:20,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 806 transitions, 16260 flow, removed 653 selfloop flow, removed 24 redundant places. [2024-11-22 13:29:20,834 INFO L231 Difference]: Finished difference. Result has 443 places, 560 transitions, 11398 flow [2024-11-22 13:29:20,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10070, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11398, PETRI_PLACES=443, PETRI_TRANSITIONS=560} [2024-11-22 13:29:20,834 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 417 predicate places. [2024-11-22 13:29:20,835 INFO L471 AbstractCegarLoop]: Abstraction has has 443 places, 560 transitions, 11398 flow [2024-11-22 13:29:20,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 7.113636363636363) internal successors, (313), 44 states have internal predecessors, (313), 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) [2024-11-22 13:29:20,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:29:20,836 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:29:20,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 13:29:21,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:29:21,041 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 13:29:21,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:29:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash -198736790, now seen corresponding path program 12 times [2024-11-22 13:29:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:29:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918920550] [2024-11-22 13:29:21,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:29:21,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:29:21,053 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-22 13:29:21,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 13:29:21,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:29:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:29:21,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:29:21,087 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:29:21,089 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-22 13:29:21,090 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-22 13:29:21,091 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-22 13:29:21,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:29:21,091 INFO L407 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1, 1] [2024-11-22 13:29:21,178 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:29:21,178 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:29:21,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:29:21 BasicIcfg [2024-11-22 13:29:21,186 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:29:21,187 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:29:21,187 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:29:21,187 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:29:21,187 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:28:17" (3/4) ... [2024-11-22 13:29:21,188 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-22 13:29:21,245 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:29:21,245 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:29:21,246 INFO L158 Benchmark]: Toolchain (without parser) took 64281.34ms. Allocated memory was 192.9MB in the beginning and 8.8GB in the end (delta: 8.6GB). Free memory was 112.9MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-11-22 13:29:21,246 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 192.9MB. Free memory is still 160.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:29:21,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.11ms. Allocated memory is still 192.9MB. Free memory was 112.9MB in the beginning and 90.9MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-22 13:29:21,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.20ms. Allocated memory is still 192.9MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:29:21,246 INFO L158 Benchmark]: Boogie Preprocessor took 62.14ms. Allocated memory is still 192.9MB. Free memory was 88.9MB in the beginning and 161.0MB in the end (delta: -72.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-11-22 13:29:21,247 INFO L158 Benchmark]: RCFGBuilder took 374.95ms. Allocated memory is still 192.9MB. Free memory was 161.0MB in the beginning and 147.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-22 13:29:21,247 INFO L158 Benchmark]: TraceAbstraction took 63378.62ms. Allocated memory was 192.9MB in the beginning and 8.8GB in the end (delta: 8.6GB). Free memory was 146.7MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-11-22 13:29:21,247 INFO L158 Benchmark]: Witness Printer took 58.87ms. Allocated memory is still 8.8GB. Free memory was 6.8GB in the beginning and 6.8GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 13:29:21,248 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 192.9MB. Free memory is still 160.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.11ms. Allocated memory is still 192.9MB. Free memory was 112.9MB in the beginning and 90.9MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.20ms. Allocated memory is still 192.9MB. Free memory was 90.9MB in the beginning and 88.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.14ms. Allocated memory is still 192.9MB. Free memory was 88.9MB in the beginning and 161.0MB in the end (delta: -72.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * RCFGBuilder took 374.95ms. Allocated memory is still 192.9MB. Free memory was 161.0MB in the beginning and 147.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 63378.62ms. Allocated memory was 192.9MB in the beginning and 8.8GB in the end (delta: 8.6GB). Free memory was 146.7MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Witness Printer took 58.87ms. Allocated memory is still 8.8GB. Free memory was 6.8GB in the beginning and 6.8GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, argc=51, i=3, id1=-2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, argc=51, i=3, id1=-2, id2=-1, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, i=23, id1=-2, id2=-1, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=25, id1=-2, id2=-1, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=25, id1=-2, id2=-1, j=26, k=9, k=9] [L722] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=25, id1=-2, id2=-1, j=26, k=9, k=9] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 63.2s, OverallIterations: 20, TraceHistogramMax: 10, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 52.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7909 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7889 mSDsluCounter, 518 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 434 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9273 IncrementalHoareTripleChecker+Invalid, 9707 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 434 mSolverCounterUnsat, 9 mSDtfsCounter, 9273 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1852 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 871 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18140 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11398occurred in iteration=19, InterpolantAutomatonStates: 576, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 1323 NumberOfCodeBlocks, 1323 NumberOfCodeBlocksAsserted, 136 NumberOfCheckSat, 1793 ConstructedInterpolants, 0 QuantifiedInterpolants, 8042 SizeOfPredicates, 160 NumberOfNonLiveVariables, 1678 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 60/4683 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-22 13:29:21,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE