./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:09:25,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:09:25,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:09:25,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:09:25,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:09:25,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:09:25,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:09:25,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:09:25,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:09:25,151 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:09:25,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:09:25,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:09:25,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:09:25,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:09:25,152 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:09:25,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:09:25,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:09:25,153 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:09:25,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:09:25,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:09:25,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:09:25,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:09:25,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:09:25,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:09:25,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:09:25,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:09:25,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:09:25,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:09:25,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:09:25,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:09:25,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:09:25,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:09:25,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:09:25,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:09:25,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:09:25,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:09:25,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:09:25,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:09:25,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:09:25,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:09:25,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:09:25,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:09:25,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2024-10-24 12:09:25,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:09:25,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:09:25,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:09:25,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:09:25,472 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:09:25,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-10-24 12:09:26,988 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:09:27,233 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:09:27,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-10-24 12:09:27,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117a02bd4/39e8199883a046d8ba093841c915ea40/FLAG497a45456 [2024-10-24 12:09:27,557 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/117a02bd4/39e8199883a046d8ba093841c915ea40 [2024-10-24 12:09:27,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:09:27,561 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:09:27,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:09:27,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:09:27,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:09:27,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:09:27" (1/1) ... [2024-10-24 12:09:27,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4864b096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:27, skipping insertion in model container [2024-10-24 12:09:27,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:09:27" (1/1) ... [2024-10-24 12:09:27,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:09:28,024 WARN L248 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-1.i[30961,30974] [2024-10-24 12:09:28,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:09:28,048 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:09:28,122 WARN L248 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-1.i[30961,30974] [2024-10-24 12:09:28,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:09:28,173 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:09:28,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28 WrapperNode [2024-10-24 12:09:28,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:09:28,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:09:28,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:09:28,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:09:28,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,218 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-10-24 12:09:28,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:09:28,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:09:28,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:09:28,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:09:28,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,256 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]. [2024-10-24 12:09:28,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:09:28,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:09:28,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:09:28,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:09:28,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (1/1) ... [2024-10-24 12:09:28,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:09:28,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:28,325 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) [2024-10-24 12:09:28,328 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 [2024-10-24 12:09:28,381 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-24 12:09:28,381 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-24 12:09:28,382 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-24 12:09:28,383 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-24 12:09:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:09:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:09:28,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:09:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:09:28,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:09:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:09:28,386 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:09:28,536 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:09:28,538 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:09:28,657 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:09:28,657 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:09:28,756 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:09:28,756 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 12:09:28,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:09:28 BoogieIcfgContainer [2024-10-24 12:09:28,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:09:28,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:09:28,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:09:28,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:09:28,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:09:27" (1/3) ... [2024-10-24 12:09:28,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15248772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:09:28, skipping insertion in model container [2024-10-24 12:09:28,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:09:28" (2/3) ... [2024-10-24 12:09:28,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15248772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:09:28, skipping insertion in model container [2024-10-24 12:09:28,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:09:28" (3/3) ... [2024-10-24 12:09:28,767 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-10-24 12:09:28,781 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:09:28,782 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:09:28,782 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:09:28,825 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:09:28,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-10-24 12:09:28,889 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-10-24 12:09:28,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:09:28,895 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. [2024-10-24 12:09:28,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-10-24 12:09:28,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-10-24 12:09:28,906 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:09:28,913 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;@3a5c0fee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:09:28,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-24 12:09:28,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:09:28,923 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-24 12:09:28,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:09:28,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:28,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:28,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:28,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-10-24 12:09:28,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:28,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728950625] [2024-10-24 12:09:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:28,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:29,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:29,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728950625] [2024-10-24 12:09:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728950625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:09:29,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:09:29,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:09:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599416527] [2024-10-24 12:09:29,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:09:29,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:09:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:09:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:09:29,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:29,609 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) [2024-10-24 12:09:29,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:29,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:29,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:29,903 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-10-24 12:09:29,905 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 12:09:29,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-10-24 12:09:29,917 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-10-24 12:09:29,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-10-24 12:09:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:09:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 12:09:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-10-24 12:09:29,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-24 12:09:29,934 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-10-24 12:09:29,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-10-24 12:09:29,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 12:09:29,942 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-10-24 12:09:29,944 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-10-24 12:09:29,949 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-10-24 12:09:29,949 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-10-24 12:09:29,949 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) [2024-10-24 12:09:29,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:29,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:29,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:09:29,950 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:29,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-10-24 12:09:29,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:29,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806530090] [2024-10-24 12:09:29,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:29,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:30,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806530090] [2024-10-24 12:09:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806530090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:09:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:09:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:09:30,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57693367] [2024-10-24 12:09:30,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:09:30,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:09:30,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:09:30,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:09:30,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:30,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 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) [2024-10-24 12:09:30,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:30,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:30,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:30,466 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-10-24 12:09:30,467 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-10-24 12:09:30,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-10-24 12:09:30,477 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-10-24 12:09:30,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-10-24 12:09:30,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:09:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:09:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-10-24 12:09:30,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-24 12:09:30,480 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-10-24 12:09:30,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-10-24 12:09:30,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-24 12:09:30,486 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-10-24 12:09:30,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-10-24 12:09:30,488 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-24 12:09:30,488 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-10-24 12:09:30,488 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) [2024-10-24 12:09:30,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:30,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:30,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:09:30,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:30,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-10-24 12:09:30,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:30,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127788463] [2024-10-24 12:09:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:30,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:30,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127788463] [2024-10-24 12:09:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127788463] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:09:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:09:30,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 12:09:30,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035905745] [2024-10-24 12:09:30,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:09:30,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:09:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:09:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:09:30,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:30,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 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) [2024-10-24 12:09:30,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:30,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:30,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:30,996 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-10-24 12:09:30,996 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-10-24 12:09:31,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-10-24 12:09:31,003 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-10-24 12:09:31,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-10-24 12:09:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:09:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 12:09:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-10-24 12:09:31,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-10-24 12:09:31,006 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-10-24 12:09:31,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-10-24 12:09:31,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-24 12:09:31,017 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-10-24 12:09:31,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-10-24 12:09:31,019 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-10-24 12:09:31,019 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-10-24 12:09:31,019 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) [2024-10-24 12:09:31,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:31,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:31,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:09:31,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:31,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-10-24 12:09:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:31,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054901978] [2024-10-24 12:09:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:31,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:31,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054901978] [2024-10-24 12:09:31,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054901978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:09:31,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:09:31,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:09:31,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764311522] [2024-10-24 12:09:31,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:09:31,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:09:31,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:31,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:09:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:09:31,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:31,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 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) [2024-10-24 12:09:31,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:31,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:31,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:31,379 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-10-24 12:09:31,381 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-10-24 12:09:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2860 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-10-24 12:09:31,387 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-10-24 12:09:31,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-10-24 12:09:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:09:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:09:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-10-24 12:09:31,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-10-24 12:09:31,390 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-10-24 12:09:31,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-10-24 12:09:31,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-24 12:09:31,400 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-10-24 12:09:31,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-10-24 12:09:31,402 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-10-24 12:09:31,402 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-10-24 12:09:31,403 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) [2024-10-24 12:09:31,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:31,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:31,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:09:31,404 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:31,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:31,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-10-24 12:09:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172257836] [2024-10-24 12:09:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:31,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:31,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:31,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172257836] [2024-10-24 12:09:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172257836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:09:31,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:09:31,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:09:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427774405] [2024-10-24 12:09:31,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:09:31,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:09:31,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:09:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:09:31,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:31,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 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) [2024-10-24 12:09:31,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:31,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:31,857 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-10-24 12:09:31,858 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-10-24 12:09:31,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4538 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-10-24 12:09:31,864 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-10-24 12:09:31,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-10-24 12:09:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:09:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 12:09:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-10-24 12:09:31,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-10-24 12:09:31,866 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-10-24 12:09:31,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-10-24 12:09:31,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-10-24 12:09:31,875 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-10-24 12:09:31,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-10-24 12:09:31,876 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-10-24 12:09:31,876 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-10-24 12:09:31,876 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) [2024-10-24 12:09:31,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:31,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:31,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:09:31,877 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:31,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:31,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-10-24 12:09:31,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464549191] [2024-10-24 12:09:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:31,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464549191] [2024-10-24 12:09:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464549191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:09:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:09:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:09:31,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262924929] [2024-10-24 12:09:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:09:31,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:09:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:31,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:09:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:09:32,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:32,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 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) [2024-10-24 12:09:32,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:32,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:32,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:32,254 INFO L124 PetriNetUnfolderBase]: 463/869 cut-off events. [2024-10-24 12:09:32,255 INFO L125 PetriNetUnfolderBase]: For 5168/5180 co-relation queries the response was YES. [2024-10-24 12:09:32,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 869 events. 463/869 cut-off events. For 5168/5180 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4024 event pairs, 71 based on Foata normal form. 57/923 useless extension candidates. Maximal degree in co-relation 3256. Up to 226 conditions per place. [2024-10-24 12:09:32,261 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 22 changer transitions 31/100 dead transitions. [2024-10-24 12:09:32,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 931 flow [2024-10-24 12:09:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:09:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:09:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-10-24 12:09:32,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-10-24 12:09:32,263 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 10 states and 125 transitions. [2024-10-24 12:09:32,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 931 flow [2024-10-24 12:09:32,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 865 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-10-24 12:09:32,273 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 463 flow [2024-10-24 12:09:32,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-10-24 12:09:32,274 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-10-24 12:09:32,274 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 463 flow [2024-10-24 12:09:32,274 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) [2024-10-24 12:09:32,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:32,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:32,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:09:32,275 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:32,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:32,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1652274962, now seen corresponding path program 1 times [2024-10-24 12:09:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703295583] [2024-10-24 12:09:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703295583] [2024-10-24 12:09:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703295583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594106888] [2024-10-24 12:09:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:32,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:32,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:32,398 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) [2024-10-24 12:09:32,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:09:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:32,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 12:09:32,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:32,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:32,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594106888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:32,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:32,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-24 12:09:32,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907995896] [2024-10-24 12:09:32,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:32,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:09:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:09:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:09:32,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:32,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2024-10-24 12:09:32,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:32,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:32,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:33,271 INFO L124 PetriNetUnfolderBase]: 661/1208 cut-off events. [2024-10-24 12:09:33,272 INFO L125 PetriNetUnfolderBase]: For 9686/9698 co-relation queries the response was YES. [2024-10-24 12:09:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 1208 events. 661/1208 cut-off events. For 9686/9698 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5416 event pairs, 59 based on Foata normal form. 57/1262 useless extension candidates. Maximal degree in co-relation 4912. Up to 201 conditions per place. [2024-10-24 12:09:33,283 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 66 selfloop transitions, 37 changer transitions 56/162 dead transitions. [2024-10-24 12:09:33,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 162 transitions, 1555 flow [2024-10-24 12:09:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 12:09:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-24 12:09:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 236 transitions. [2024-10-24 12:09:33,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-10-24 12:09:33,286 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 463 flow. Second operand 19 states and 236 transitions. [2024-10-24 12:09:33,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 162 transitions, 1555 flow [2024-10-24 12:09:33,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 162 transitions, 1431 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-10-24 12:09:33,306 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 793 flow [2024-10-24 12:09:33,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=793, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2024-10-24 12:09:33,307 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2024-10-24 12:09:33,308 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 793 flow [2024-10-24 12:09:33,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2024-10-24 12:09:33,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:33,308 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:33,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:09:33,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:33,509 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:33,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash 729694198, now seen corresponding path program 1 times [2024-10-24 12:09:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:33,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981404563] [2024-10-24 12:09:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981404563] [2024-10-24 12:09:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981404563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:33,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951350293] [2024-10-24 12:09:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:33,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:33,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:33,680 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) [2024-10-24 12:09:33,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:09:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:33,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 12:09:33,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:33,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:34,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951350293] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:34,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:34,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-24 12:09:34,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980672911] [2024-10-24 12:09:34,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:34,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 12:09:34,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 12:09:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:09:34,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:34,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 793 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) [2024-10-24 12:09:34,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:34,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:34,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:34,760 INFO L124 PetriNetUnfolderBase]: 859/1619 cut-off events. [2024-10-24 12:09:34,760 INFO L125 PetriNetUnfolderBase]: For 20143/20155 co-relation queries the response was YES. [2024-10-24 12:09:34,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7496 conditions, 1619 events. 859/1619 cut-off events. For 20143/20155 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7244 event pairs, 215 based on Foata normal form. 93/1711 useless extension candidates. Maximal degree in co-relation 7453. Up to 756 conditions per place. [2024-10-24 12:09:34,775 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 95 selfloop transitions, 27 changer transitions 89/214 dead transitions. [2024-10-24 12:09:34,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 214 transitions, 2481 flow [2024-10-24 12:09:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 12:09:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-24 12:09:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 301 transitions. [2024-10-24 12:09:34,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5016666666666667 [2024-10-24 12:09:34,777 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 793 flow. Second operand 25 states and 301 transitions. [2024-10-24 12:09:34,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 214 transitions, 2481 flow [2024-10-24 12:09:34,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 1972 flow, removed 241 selfloop flow, removed 10 redundant places. [2024-10-24 12:09:34,805 INFO L231 Difference]: Finished difference. Result has 115 places, 78 transitions, 887 flow [2024-10-24 12:09:34,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=887, PETRI_PLACES=115, PETRI_TRANSITIONS=78} [2024-10-24 12:09:34,806 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2024-10-24 12:09:34,806 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 78 transitions, 887 flow [2024-10-24 12:09:34,806 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) [2024-10-24 12:09:34,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:34,807 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:34,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:09:35,008 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,SelfDestructingSolverStorable7 [2024-10-24 12:09:35,009 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:35,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2008695610, now seen corresponding path program 2 times [2024-10-24 12:09:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:35,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536407730] [2024-10-24 12:09:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:35,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:35,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536407730] [2024-10-24 12:09:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536407730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:35,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56114974] [2024-10-24 12:09:35,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:09:35,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:35,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:35,170 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) [2024-10-24 12:09:35,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:09:35,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:09:35,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:09:35,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 12:09:35,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:35,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:35,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56114974] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:35,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:35,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-24 12:09:35,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945401066] [2024-10-24 12:09:35,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:35,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 12:09:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 12:09:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:09:35,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:35,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 78 transitions, 887 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) [2024-10-24 12:09:35,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:35,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:35,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:36,627 INFO L124 PetriNetUnfolderBase]: 1453/2753 cut-off events. [2024-10-24 12:09:36,627 INFO L125 PetriNetUnfolderBase]: For 65076/65088 co-relation queries the response was YES. [2024-10-24 12:09:36,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14625 conditions, 2753 events. 1453/2753 cut-off events. For 65076/65088 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14778 event pairs, 136 based on Foata normal form. 93/2845 useless extension candidates. Maximal degree in co-relation 14569. Up to 495 conditions per place. [2024-10-24 12:09:36,654 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 127 selfloop transitions, 82 changer transitions 91/303 dead transitions. [2024-10-24 12:09:36,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 303 transitions, 3945 flow [2024-10-24 12:09:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 12:09:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-24 12:09:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 393 transitions. [2024-10-24 12:09:36,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2024-10-24 12:09:36,657 INFO L175 Difference]: Start difference. First operand has 115 places, 78 transitions, 887 flow. Second operand 32 states and 393 transitions. [2024-10-24 12:09:36,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 303 transitions, 3945 flow [2024-10-24 12:09:36,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 303 transitions, 3348 flow, removed 289 selfloop flow, removed 13 redundant places. [2024-10-24 12:09:36,735 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 1696 flow [2024-10-24 12:09:36,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1696, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2024-10-24 12:09:36,737 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 121 predicate places. [2024-10-24 12:09:36,737 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 1696 flow [2024-10-24 12:09:36,738 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) [2024-10-24 12:09:36,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:36,738 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:36,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 12:09:36,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:36,940 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:36,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2012930652, now seen corresponding path program 3 times [2024-10-24 12:09:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:36,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010006317] [2024-10-24 12:09:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:09:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010006317] [2024-10-24 12:09:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010006317] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:37,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883866027] [2024-10-24 12:09:37,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:09:37,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:37,086 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) [2024-10-24 12:09:37,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:09:37,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-24 12:09:37,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:09:37,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 12:09:37,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:09:37,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:09:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883866027] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:37,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:37,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-24 12:09:37,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368729634] [2024-10-24 12:09:37,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:37,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 12:09:37,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 12:09:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:09:37,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:37,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 1696 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) [2024-10-24 12:09:37,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:37,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:37,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:38,891 INFO L124 PetriNetUnfolderBase]: 2047/3853 cut-off events. [2024-10-24 12:09:38,892 INFO L125 PetriNetUnfolderBase]: For 159108/159114 co-relation queries the response was YES. [2024-10-24 12:09:38,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23545 conditions, 3853 events. 2047/3853 cut-off events. For 159108/159114 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22443 event pairs, 96 based on Foata normal form. 123/3975 useless extension candidates. Maximal degree in co-relation 23474. Up to 723 conditions per place. [2024-10-24 12:09:38,933 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 131 selfloop transitions, 129 changer transitions 113/376 dead transitions. [2024-10-24 12:09:38,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 376 transitions, 6015 flow [2024-10-24 12:09:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-24 12:09:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-24 12:09:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 430 transitions. [2024-10-24 12:09:38,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-10-24 12:09:38,936 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 1696 flow. Second operand 35 states and 430 transitions. [2024-10-24 12:09:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 376 transitions, 6015 flow [2024-10-24 12:09:39,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 376 transitions, 5154 flow, removed 414 selfloop flow, removed 15 redundant places. [2024-10-24 12:09:39,182 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 2668 flow [2024-10-24 12:09:39,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2668, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2024-10-24 12:09:39,183 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2024-10-24 12:09:39,183 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 2668 flow [2024-10-24 12:09:39,184 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) [2024-10-24 12:09:39,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:39,184 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:39,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:09:39,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:39,385 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:39,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash 330236131, now seen corresponding path program 4 times [2024-10-24 12:09:39,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:39,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791208229] [2024-10-24 12:09:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:39,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:39,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:39,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791208229] [2024-10-24 12:09:39,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791208229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014933204] [2024-10-24 12:09:39,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:09:39,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:39,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:39,579 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) [2024-10-24 12:09:39,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:09:39,642 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:09:39,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:09:39,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 12:09:39,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:39,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:09:39,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014933204] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:39,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:39,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-24 12:09:39,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719039499] [2024-10-24 12:09:39,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:39,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 12:09:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 12:09:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2024-10-24 12:09:39,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:39,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 2668 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) [2024-10-24 12:09:39,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:39,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:39,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:42,258 INFO L124 PetriNetUnfolderBase]: 3406/6267 cut-off events. [2024-10-24 12:09:42,259 INFO L125 PetriNetUnfolderBase]: For 404474/404480 co-relation queries the response was YES. [2024-10-24 12:09:42,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 6267 events. 3406/6267 cut-off events. For 404474/404480 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 36134 event pairs, 89 based on Foata normal form. 123/6387 useless extension candidates. Maximal degree in co-relation 46506. Up to 1245 conditions per place. [2024-10-24 12:09:42,329 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 170 selfloop transitions, 223 changer transitions 160/556 dead transitions. [2024-10-24 12:09:42,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 556 transitions, 11774 flow [2024-10-24 12:09:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-24 12:09:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-10-24 12:09:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 628 transitions. [2024-10-24 12:09:42,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130718954248366 [2024-10-24 12:09:42,333 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 2668 flow. Second operand 51 states and 628 transitions. [2024-10-24 12:09:42,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 556 transitions, 11774 flow [2024-10-24 12:09:42,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 556 transitions, 9571 flow, removed 1071 selfloop flow, removed 19 redundant places. [2024-10-24 12:09:42,898 INFO L231 Difference]: Finished difference. Result has 233 places, 278 transitions, 5586 flow [2024-10-24 12:09:42,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5586, PETRI_PLACES=233, PETRI_TRANSITIONS=278} [2024-10-24 12:09:42,899 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-10-24 12:09:42,900 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 278 transitions, 5586 flow [2024-10-24 12:09:42,900 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) [2024-10-24 12:09:42,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:42,900 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:42,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 12:09:43,101 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,SelfDestructingSolverStorable10 [2024-10-24 12:09:43,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:43,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:43,102 INFO L85 PathProgramCache]: Analyzing trace with hash -128760654, now seen corresponding path program 5 times [2024-10-24 12:09:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:43,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889774343] [2024-10-24 12:09:43,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:43,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:09:43,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:43,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889774343] [2024-10-24 12:09:43,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889774343] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:43,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215452674] [2024-10-24 12:09:43,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:09:43,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:43,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:43,548 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) [2024-10-24 12:09:43,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:09:43,609 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-24 12:09:43,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:09:43,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 12:09:43,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:09:43,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:09:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215452674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:44,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 28 [2024-10-24 12:09:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187306555] [2024-10-24 12:09:44,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:44,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 12:09:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 12:09:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-10-24 12:09:44,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:44,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 278 transitions, 5586 flow. Second operand has 29 states, 29 states have (on average 7.310344827586207) internal successors, (212), 29 states have internal predecessors, (212), 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) [2024-10-24 12:09:44,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:44,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:44,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:46,395 INFO L124 PetriNetUnfolderBase]: 3496/6608 cut-off events. [2024-10-24 12:09:46,395 INFO L125 PetriNetUnfolderBase]: For 560184/560190 co-relation queries the response was YES. [2024-10-24 12:09:46,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50510 conditions, 6608 events. 3496/6608 cut-off events. For 560184/560190 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 39309 event pairs, 1349 based on Foata normal form. 87/6694 useless extension candidates. Maximal degree in co-relation 50404. Up to 4788 conditions per place. [2024-10-24 12:09:46,464 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 332 selfloop transitions, 49 changer transitions 113/497 dead transitions. [2024-10-24 12:09:46,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 497 transitions, 11502 flow [2024-10-24 12:09:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-24 12:09:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-24 12:09:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 433 transitions. [2024-10-24 12:09:46,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48761261261261263 [2024-10-24 12:09:46,466 INFO L175 Difference]: Start difference. First operand has 233 places, 278 transitions, 5586 flow. Second operand 37 states and 433 transitions. [2024-10-24 12:09:46,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 497 transitions, 11502 flow [2024-10-24 12:09:47,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 497 transitions, 7784 flow, removed 1834 selfloop flow, removed 19 redundant places. [2024-10-24 12:09:47,509 INFO L231 Difference]: Finished difference. Result has 256 places, 296 transitions, 4335 flow [2024-10-24 12:09:47,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4335, PETRI_PLACES=256, PETRI_TRANSITIONS=296} [2024-10-24 12:09:47,510 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2024-10-24 12:09:47,510 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 296 transitions, 4335 flow [2024-10-24 12:09:47,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.310344827586207) internal successors, (212), 29 states have internal predecessors, (212), 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) [2024-10-24 12:09:47,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:47,511 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:47,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 12:09:47,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:47,712 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:47,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -94137252, now seen corresponding path program 6 times [2024-10-24 12:09:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950055786] [2024-10-24 12:09:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950055786] [2024-10-24 12:09:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950055786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:48,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993963902] [2024-10-24 12:09:48,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 12:09:48,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:48,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:48,248 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) [2024-10-24 12:09:48,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:09:48,316 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-10-24 12:09:48,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:09:48,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 12:09:48,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:48,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:48,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993963902] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:48,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:48,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-10-24 12:09:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806488483] [2024-10-24 12:09:48,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:48,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 12:09:48,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:48,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 12:09:48,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-10-24 12:09:48,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:48,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 296 transitions, 4335 flow. Second operand has 31 states, 31 states have (on average 7.290322580645161) internal successors, (226), 31 states have internal predecessors, (226), 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) [2024-10-24 12:09:48,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:48,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:51,378 INFO L124 PetriNetUnfolderBase]: 4018/7799 cut-off events. [2024-10-24 12:09:51,378 INFO L125 PetriNetUnfolderBase]: For 501683/501689 co-relation queries the response was YES. [2024-10-24 12:09:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 7799 events. 4018/7799 cut-off events. For 501683/501689 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 48600 event pairs, 870 based on Foata normal form. 87/7885 useless extension candidates. Maximal degree in co-relation 49115. Up to 3568 conditions per place. [2024-10-24 12:09:51,454 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 316 selfloop transitions, 170 changer transitions 127/616 dead transitions. [2024-10-24 12:09:51,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 616 transitions, 10473 flow [2024-10-24 12:09:51,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-24 12:09:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-24 12:09:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 519 transitions. [2024-10-24 12:09:51,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2024-10-24 12:09:51,457 INFO L175 Difference]: Start difference. First operand has 256 places, 296 transitions, 4335 flow. Second operand 44 states and 519 transitions. [2024-10-24 12:09:51,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 616 transitions, 10473 flow [2024-10-24 12:09:52,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 616 transitions, 9694 flow, removed 362 selfloop flow, removed 23 redundant places. [2024-10-24 12:09:52,284 INFO L231 Difference]: Finished difference. Result has 288 places, 353 transitions, 5572 flow [2024-10-24 12:09:52,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3908, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5572, PETRI_PLACES=288, PETRI_TRANSITIONS=353} [2024-10-24 12:09:52,285 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 262 predicate places. [2024-10-24 12:09:52,285 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 353 transitions, 5572 flow [2024-10-24 12:09:52,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.290322580645161) internal successors, (226), 31 states have internal predecessors, (226), 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) [2024-10-24 12:09:52,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:52,286 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:52,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 12:09:52,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:52,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:52,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 889180580, now seen corresponding path program 7 times [2024-10-24 12:09:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:52,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58890918] [2024-10-24 12:09:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:52,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:52,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58890918] [2024-10-24 12:09:52,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58890918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440447446] [2024-10-24 12:09:52,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 12:09:52,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:52,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:52,922 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) [2024-10-24 12:09:52,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:09:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:52,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 12:09:52,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:53,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440447446] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:53,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:53,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2024-10-24 12:09:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656285758] [2024-10-24 12:09:53,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:53,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-24 12:09:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-24 12:09:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-10-24 12:09:53,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:53,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 353 transitions, 5572 flow. Second operand has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 35 states have internal predecessors, (255), 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) [2024-10-24 12:09:53,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:53,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:53,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:09:56,765 INFO L124 PetriNetUnfolderBase]: 4729/9221 cut-off events. [2024-10-24 12:09:56,765 INFO L125 PetriNetUnfolderBase]: For 739508/739514 co-relation queries the response was YES. [2024-10-24 12:09:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62676 conditions, 9221 events. 4729/9221 cut-off events. For 739508/739514 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 58510 event pairs, 186 based on Foata normal form. 87/9307 useless extension candidates. Maximal degree in co-relation 62550. Up to 1479 conditions per place. [2024-10-24 12:09:56,857 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 222 selfloop transitions, 349 changer transitions 139/713 dead transitions. [2024-10-24 12:09:56,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 713 transitions, 13366 flow [2024-10-24 12:09:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-24 12:09:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-10-24 12:09:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 599 transitions. [2024-10-24 12:09:56,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49916666666666665 [2024-10-24 12:09:56,860 INFO L175 Difference]: Start difference. First operand has 288 places, 353 transitions, 5572 flow. Second operand 50 states and 599 transitions. [2024-10-24 12:09:56,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 713 transitions, 13366 flow [2024-10-24 12:09:58,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 713 transitions, 12012 flow, removed 589 selfloop flow, removed 30 redundant places. [2024-10-24 12:09:58,324 INFO L231 Difference]: Finished difference. Result has 322 places, 423 transitions, 7427 flow [2024-10-24 12:09:58,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4898, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=7427, PETRI_PLACES=322, PETRI_TRANSITIONS=423} [2024-10-24 12:09:58,325 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 296 predicate places. [2024-10-24 12:09:58,325 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 423 transitions, 7427 flow [2024-10-24 12:09:58,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 35 states have internal predecessors, (255), 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) [2024-10-24 12:09:58,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:09:58,326 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:09:58,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 12:09:58,527 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,SelfDestructingSolverStorable13 [2024-10-24 12:09:58,527 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:09:58,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:09:58,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1747998468, now seen corresponding path program 8 times [2024-10-24 12:09:58,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:09:58,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348228160] [2024-10-24 12:09:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:09:58,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:09:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:09:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:09:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348228160] [2024-10-24 12:09:58,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348228160] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:09:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538237135] [2024-10-24 12:09:58,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:09:58,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:09:58,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:09:58,936 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) [2024-10-24 12:09:58,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 12:09:59,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:09:59,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:09:59,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 12:09:59,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:09:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:59,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:09:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:09:59,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538237135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:09:59,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:09:59,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 33 [2024-10-24 12:09:59,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588509431] [2024-10-24 12:09:59,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:09:59,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-24 12:09:59,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:09:59,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-24 12:09:59,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 12:09:59,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:09:59,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 423 transitions, 7427 flow. Second operand has 34 states, 34 states have (on average 7.205882352941177) internal successors, (245), 34 states have internal predecessors, (245), 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) [2024-10-24 12:09:59,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:09:59,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:09:59,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:10:04,017 INFO L124 PetriNetUnfolderBase]: 5980/11496 cut-off events. [2024-10-24 12:10:04,017 INFO L125 PetriNetUnfolderBase]: For 1194718/1194724 co-relation queries the response was YES. [2024-10-24 12:10:04,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86171 conditions, 11496 events. 5980/11496 cut-off events. For 1194718/1194724 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 74273 event pairs, 96 based on Foata normal form. 87/11582 useless extension candidates. Maximal degree in co-relation 86029. Up to 1833 conditions per place. [2024-10-24 12:10:04,169 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 262 selfloop transitions, 444 changer transitions 137/846 dead transitions. [2024-10-24 12:10:04,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 846 transitions, 16970 flow [2024-10-24 12:10:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-24 12:10:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-24 12:10:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 698 transitions. [2024-10-24 12:10:04,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102339181286549 [2024-10-24 12:10:04,173 INFO L175 Difference]: Start difference. First operand has 322 places, 423 transitions, 7427 flow. Second operand 57 states and 698 transitions. [2024-10-24 12:10:04,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 846 transitions, 16970 flow [2024-10-24 12:10:06,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 846 transitions, 14747 flow, removed 1059 selfloop flow, removed 22 redundant places. [2024-10-24 12:10:06,227 INFO L231 Difference]: Finished difference. Result has 372 places, 503 transitions, 9436 flow [2024-10-24 12:10:06,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=9436, PETRI_PLACES=372, PETRI_TRANSITIONS=503} [2024-10-24 12:10:06,228 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2024-10-24 12:10:06,228 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 503 transitions, 9436 flow [2024-10-24 12:10:06,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.205882352941177) internal successors, (245), 34 states have internal predecessors, (245), 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) [2024-10-24 12:10:06,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:10:06,229 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:10:06,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-24 12:10:06,429 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,SelfDestructingSolverStorable14 [2024-10-24 12:10:06,430 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:10:06,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:10:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1955847245, now seen corresponding path program 9 times [2024-10-24 12:10:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:10:06,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124816973] [2024-10-24 12:10:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:10:06,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:10:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:10:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:10:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:10:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124816973] [2024-10-24 12:10:06,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124816973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:10:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851106031] [2024-10-24 12:10:06,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:10:06,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:10:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:10:06,820 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) [2024-10-24 12:10:06,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 12:10:06,890 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 12:10:06,890 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:10:06,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 12:10:06,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:10:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 223 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:10:07,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:10:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 12:10:07,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851106031] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:10:07,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:10:07,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-10-24 12:10:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308895200] [2024-10-24 12:10:07,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:10:07,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-24 12:10:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:10:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-24 12:10:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-10-24 12:10:07,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:10:07,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 503 transitions, 9436 flow. Second operand has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 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) [2024-10-24 12:10:07,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:10:07,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:10:07,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:10:11,444 INFO L124 PetriNetUnfolderBase]: 6205/11989 cut-off events. [2024-10-24 12:10:11,444 INFO L125 PetriNetUnfolderBase]: For 1415557/1415563 co-relation queries the response was YES. [2024-10-24 12:10:11,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94373 conditions, 11989 events. 6205/11989 cut-off events. For 1415557/1415563 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 78166 event pairs, 258 based on Foata normal form. 60/12048 useless extension candidates. Maximal degree in co-relation 94215. Up to 1947 conditions per place. [2024-10-24 12:10:11,624 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 219 selfloop transitions, 455 changer transitions 124/801 dead transitions. [2024-10-24 12:10:11,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 801 transitions, 17058 flow [2024-10-24 12:10:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-24 12:10:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-10-24 12:10:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 618 transitions. [2024-10-24 12:10:11,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-10-24 12:10:11,627 INFO L175 Difference]: Start difference. First operand has 372 places, 503 transitions, 9436 flow. Second operand 51 states and 618 transitions. [2024-10-24 12:10:11,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 801 transitions, 17058 flow [2024-10-24 12:10:14,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 801 transitions, 14925 flow, removed 832 selfloop flow, removed 36 redundant places. [2024-10-24 12:10:14,652 INFO L231 Difference]: Finished difference. Result has 390 places, 529 transitions, 10032 flow [2024-10-24 12:10:14,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=10032, PETRI_PLACES=390, PETRI_TRANSITIONS=529} [2024-10-24 12:10:14,654 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 364 predicate places. [2024-10-24 12:10:14,654 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 529 transitions, 10032 flow [2024-10-24 12:10:14,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 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) [2024-10-24 12:10:14,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:10:14,655 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:10:14,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 12:10:14,856 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,SelfDestructingSolverStorable15 [2024-10-24 12:10:14,857 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:10:14,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:10:14,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1667303893, now seen corresponding path program 10 times [2024-10-24 12:10:14,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:10:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815310533] [2024-10-24 12:10:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:10:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:10:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:10:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:10:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:10:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815310533] [2024-10-24 12:10:15,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815310533] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:10:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554161240] [2024-10-24 12:10:15,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:10:15,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:10:15,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:10:15,246 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) [2024-10-24 12:10:15,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 12:10:15,314 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:10:15,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:10:15,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 12:10:15,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:10:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:10:15,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:10:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:10:15,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554161240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:10:15,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:10:15,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 30 [2024-10-24 12:10:15,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556714560] [2024-10-24 12:10:15,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:10:15,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 12:10:15,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:10:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 12:10:15,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2024-10-24 12:10:15,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-24 12:10:15,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 529 transitions, 10032 flow. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 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) [2024-10-24 12:10:15,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:10:15,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-24 12:10:15,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:10:20,201 INFO L124 PetriNetUnfolderBase]: 6268/12102 cut-off events. [2024-10-24 12:10:20,201 INFO L125 PetriNetUnfolderBase]: For 1552938/1552944 co-relation queries the response was YES. [2024-10-24 12:10:20,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97051 conditions, 12102 events. 6268/12102 cut-off events. For 1552938/1552944 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 78996 event pairs, 58 based on Foata normal form. 123/12224 useless extension candidates. Maximal degree in co-relation 96890. Up to 1971 conditions per place. [2024-10-24 12:10:20,641 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 248 selfloop transitions, 488 changer transitions 151/890 dead transitions. [2024-10-24 12:10:20,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 890 transitions, 18980 flow [2024-10-24 12:10:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-24 12:10:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-10-24 12:10:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 705 transitions. [2024-10-24 12:10:20,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064655172413793 [2024-10-24 12:10:20,644 INFO L175 Difference]: Start difference. First operand has 390 places, 529 transitions, 10032 flow. Second operand 58 states and 705 transitions. [2024-10-24 12:10:20,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 890 transitions, 18980 flow [2024-10-24 12:10:23,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 890 transitions, 17574 flow, removed 534 selfloop flow, removed 25 redundant places. [2024-10-24 12:10:23,513 INFO L231 Difference]: Finished difference. Result has 433 places, 542 transitions, 11075 flow [2024-10-24 12:10:23,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9020, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11075, PETRI_PLACES=433, PETRI_TRANSITIONS=542} [2024-10-24 12:10:23,514 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 407 predicate places. [2024-10-24 12:10:23,514 INFO L471 AbstractCegarLoop]: Abstraction has has 433 places, 542 transitions, 11075 flow [2024-10-24 12:10:23,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 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) [2024-10-24 12:10:23,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:10:23,515 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:10:23,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 12:10:23,719 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,SelfDestructingSolverStorable16 [2024-10-24 12:10:23,720 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-24 12:10:23,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:10:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash 978588567, now seen corresponding path program 11 times [2024-10-24 12:10:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:10:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952073120] [2024-10-24 12:10:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:10:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:10:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:10:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 244 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:10:23,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:10:23,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952073120] [2024-10-24 12:10:23,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952073120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:10:23,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209389468] [2024-10-24 12:10:23,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:10:23,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:10:23,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:10:23,895 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) [2024-10-24 12:10:23,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 12:10:23,965 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-24 12:10:23,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:10:23,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 12:10:23,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:10:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:10:24,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:10:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209389468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:10:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:10:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-10-24 12:10:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786524408] [2024-10-24 12:10:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:10:24,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:10:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:10:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:10:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:10:24,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-10-24 12:10:24,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 542 transitions, 11075 flow. Second operand has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 states have internal predecessors, (167), 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) [2024-10-24 12:10:24,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:10:24,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-10-24 12:10:24,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:10:37,070 INFO L124 PetriNetUnfolderBase]: 21242/41350 cut-off events. [2024-10-24 12:10:37,071 INFO L125 PetriNetUnfolderBase]: For 5169899/5173450 co-relation queries the response was YES. [2024-10-24 12:10:37,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279447 conditions, 41350 events. 21242/41350 cut-off events. For 5169899/5173450 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 378378 event pairs, 972 based on Foata normal form. 815/37429 useless extension candidates. Maximal degree in co-relation 279282. Up to 6717 conditions per place. [2024-10-24 12:10:37,987 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 602/602 dead transitions. [2024-10-24 12:10:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 602 transitions, 10122 flow [2024-10-24 12:10:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 12:10:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 12:10:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 237 transitions. [2024-10-24 12:10:37,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7596153846153846 [2024-10-24 12:10:37,990 INFO L175 Difference]: Start difference. First operand has 433 places, 542 transitions, 11075 flow. Second operand 13 states and 237 transitions. [2024-10-24 12:10:37,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 602 transitions, 10122 flow [2024-10-24 12:10:42,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 602 transitions, 8494 flow, removed 197 selfloop flow, removed 74 redundant places. [2024-10-24 12:10:42,399 INFO L231 Difference]: Finished difference. Result has 355 places, 0 transitions, 0 flow [2024-10-24 12:10:42,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8072, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=355, PETRI_TRANSITIONS=0} [2024-10-24 12:10:42,400 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 329 predicate places. [2024-10-24 12:10:42,400 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 0 transitions, 0 flow [2024-10-24 12:10:42,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 states have internal predecessors, (167), 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) [2024-10-24 12:10:42,403 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-24 12:10:42,403 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-24 12:10:42,403 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-24 12:10:42,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-24 12:10:42,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 12:10:42,605 INFO L407 BasicCegarLoop]: Path program histogram: [11, 3, 2, 1, 1] [2024-10-24 12:10:42,608 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 12:10:42,608 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 12:10:42,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:10:42 BasicIcfg [2024-10-24 12:10:42,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 12:10:42,614 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 12:10:42,614 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 12:10:42,615 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 12:10:42,615 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:09:28" (3/4) ... [2024-10-24 12:10:42,617 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 12:10:42,620 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-10-24 12:10:42,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-10-24 12:10:42,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-10-24 12:10:42,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-24 12:10:42,625 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-24 12:10:42,626 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 12:10:42,711 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 12:10:42,711 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 12:10:42,711 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 12:10:42,713 INFO L158 Benchmark]: Toolchain (without parser) took 75150.91ms. Allocated memory was 172.0MB in the beginning and 13.4GB in the end (delta: 13.2GB). Free memory was 97.2MB in the beginning and 10.7GB in the end (delta: -10.6GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2024-10-24 12:10:42,713 INFO L158 Benchmark]: CDTParser took 0.77ms. Allocated memory is still 172.0MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 12:10:42,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.99ms. Allocated memory was 172.0MB in the beginning and 237.0MB in the end (delta: 65.0MB). Free memory was 97.0MB in the beginning and 200.5MB in the end (delta: -103.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2024-10-24 12:10:42,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.09ms. Allocated memory is still 237.0MB. Free memory was 200.5MB in the beginning and 199.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:10:42,716 INFO L158 Benchmark]: Boogie Preprocessor took 61.92ms. Allocated memory is still 237.0MB. Free memory was 199.5MB in the beginning and 197.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 12:10:42,717 INFO L158 Benchmark]: RCFGBuilder took 474.08ms. Allocated memory is still 237.0MB. Free memory was 197.4MB in the beginning and 178.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-24 12:10:42,718 INFO L158 Benchmark]: TraceAbstraction took 73854.28ms. Allocated memory was 237.0MB in the beginning and 13.4GB in the end (delta: 13.2GB). Free memory was 177.5MB in the beginning and 10.7GB in the end (delta: -10.5GB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. [2024-10-24 12:10:42,719 INFO L158 Benchmark]: Witness Printer took 97.21ms. Allocated memory is still 13.4GB. Free memory was 10.7GB in the beginning and 10.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 12:10:42,721 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77ms. Allocated memory is still 172.0MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.99ms. Allocated memory was 172.0MB in the beginning and 237.0MB in the end (delta: 65.0MB). Free memory was 97.0MB in the beginning and 200.5MB in the end (delta: -103.5MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.09ms. Allocated memory is still 237.0MB. Free memory was 200.5MB in the beginning and 199.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.92ms. Allocated memory is still 237.0MB. Free memory was 199.5MB in the beginning and 197.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 474.08ms. Allocated memory is still 237.0MB. Free memory was 197.4MB in the beginning and 178.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 73854.28ms. Allocated memory was 237.0MB in the beginning and 13.4GB in the end (delta: 13.2GB). Free memory was 177.5MB in the beginning and 10.7GB in the end (delta: -10.5GB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. * Witness Printer took 97.21ms. Allocated memory is still 13.4GB. Free memory was 10.7GB in the beginning and 10.7GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - 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: 73.7s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 61.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6622 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6594 mSDsluCounter, 328 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 315 mSDsCounter, 403 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7659 IncrementalHoareTripleChecker+Invalid, 8062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 403 mSolverCounterUnsat, 13 mSDtfsCounter, 7659 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1731 GetRequests, 977 SyntacticMatches, 36 SemanticMatches, 718 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12302 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11075occurred in iteration=17, InterpolantAutomatonStates: 525, 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, 0.5s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 1260 NumberOfCodeBlocks, 1260 NumberOfCodeBlocksAsserted, 79 NumberOfCheckSat, 1738 ConstructedInterpolants, 0 QuantifiedInterpolants, 7686 SizeOfPredicates, 143 NumberOfNonLiveVariables, 1693 ConjunctsInSsa, 210 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 569/4636 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 12:10:42,753 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 Result: TRUE