./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/triangular-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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:17:52,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:17:52,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:17:52,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:17:52,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:17:52,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:17:52,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:17:52,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:17:52,402 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:17:52,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:17:52,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:17:52,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:17:52,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:17:52,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:17:52,408 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:17:52,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:17:52,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:17:52,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:17:52,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:17:52,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:17:52,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:17:52,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:17:52,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:17:52,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:17:52,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:17:52,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:17:52,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:17:52,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:17:52,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:17:52,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:17:52,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:17:52,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:17:52,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:17:52,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:17:52,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:17:52,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:17:52,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:17:52,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:17:52,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:17:52,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:17:52,414 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:17:52,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:17:52,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:17:52,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2024-06-27 16:17:52,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:17:52,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:17:52,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:17:52,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:17:52,664 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:17:52,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2024-06-27 16:17:53,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:17:53,936 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:17:53,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2024-06-27 16:17:53,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d719786/8aef3eb09fca4ba1a440e5d1f4730339/FLAGec36a2e7b [2024-06-27 16:17:53,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d719786/8aef3eb09fca4ba1a440e5d1f4730339 [2024-06-27 16:17:53,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:17:53,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:17:53,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:17:53,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:17:53,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:17:53,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:17:53" (1/1) ... [2024-06-27 16:17:53,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b88045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:53, skipping insertion in model container [2024-06-27 16:17:53,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:17:53" (1/1) ... [2024-06-27 16:17:53,992 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:17:54,261 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2024-06-27 16:17:54,267 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:17:54,272 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:17:54,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i[30950,30963] [2024-06-27 16:17:54,327 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:17:54,358 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:17:54,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54 WrapperNode [2024-06-27 16:17:54,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:17:54,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:17:54,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:17:54,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:17:54,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,404 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-06-27 16:17:54,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:17:54,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:17:54,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:17:54,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:17:54,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,429 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]. [2024-06-27 16:17:54,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:17:54,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:17:54,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:17:54,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:17:54,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (1/1) ... [2024-06-27 16:17:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:17:54,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:17:54,482 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) [2024-06-27 16:17:54,487 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 [2024-06-27 16:17:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 16:17:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 16:17:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 16:17:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 16:17:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:17:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:17:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:17:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:17:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:17:54,523 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:17:54,621 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:17:54,623 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:17:54,715 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:17:54,716 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:17:54,782 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:17:54,782 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 16:17:54,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:17:54 BoogieIcfgContainer [2024-06-27 16:17:54,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:17:54,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:17:54,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:17:54,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:17:54,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:17:53" (1/3) ... [2024-06-27 16:17:54,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e126d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:17:54, skipping insertion in model container [2024-06-27 16:17:54,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:17:54" (2/3) ... [2024-06-27 16:17:54,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e126d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:17:54, skipping insertion in model container [2024-06-27 16:17:54,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:17:54" (3/3) ... [2024-06-27 16:17:54,791 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-06-27 16:17:54,797 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:17:54,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:17:54,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:17:54,804 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:17:54,836 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:17:54,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-06-27 16:17:54,895 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-06-27 16:17:54,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:17:54,898 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. [2024-06-27 16:17:54,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-06-27 16:17:54,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-06-27 16:17:54,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:17:54,912 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@27b9cd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:17:54,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-06-27 16:17:54,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:17:54,918 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-06-27 16:17:54,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:17:54,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:54,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:54,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:54,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-06-27 16:17:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:54,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940098973] [2024-06-27 16:17:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:54,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:55,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940098973] [2024-06-27 16:17:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940098973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:17:55,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:17:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 16:17:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089311432] [2024-06-27 16:17:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:17:55,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:17:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:17:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:17:55,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:55,440 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) [2024-06-27 16:17:55,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:55,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:55,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:55,595 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-06-27 16:17:55,595 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:17:55,599 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. [2024-06-27 16:17:55,602 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-06-27 16:17:55,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-06-27 16:17:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:17:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:17:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-27 16:17:55,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 16:17:55,615 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-06-27 16:17:55,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-06-27 16:17:55,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 16:17:55,620 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-06-27 16:17:55,623 INFO L264 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} [2024-06-27 16:17:55,626 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-06-27 16:17:55,627 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-06-27 16:17:55,627 INFO L496 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) [2024-06-27 16:17:55,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:55,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:55,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:17:55,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:55,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-06-27 16:17:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975428089] [2024-06-27 16:17:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:55,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975428089] [2024-06-27 16:17:55,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975428089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:17:55,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:17:55,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:17:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837275058] [2024-06-27 16:17:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:17:55,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:17:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:17:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:17:55,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:55,833 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) [2024-06-27 16:17:55,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:55,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:55,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:55,991 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-06-27 16:17:55,991 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-06-27 16:17:55,993 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. [2024-06-27 16:17:55,996 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-06-27 16:17:55,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-06-27 16:17:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:17:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:17:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 16:17:55,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 16:17:55,998 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-06-27 16:17:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-06-27 16:17:56,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 16:17:56,001 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-06-27 16:17:56,001 INFO L264 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} [2024-06-27 16:17:56,002 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-06-27 16:17:56,002 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-06-27 16:17:56,002 INFO L496 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) [2024-06-27 16:17:56,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:56,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:56,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:17:56,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:56,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-06-27 16:17:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567199479] [2024-06-27 16:17:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:56,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:56,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567199479] [2024-06-27 16:17:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567199479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:17:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:17:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:17:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692566210] [2024-06-27 16:17:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:17:56,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:17:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:17:56,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:17:56,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:56,092 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) [2024-06-27 16:17:56,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:56,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:56,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:56,331 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-06-27 16:17:56,331 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-06-27 16:17:56,332 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. [2024-06-27 16:17:56,334 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-06-27 16:17:56,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-06-27 16:17:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:17:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:17:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 16:17:56,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-27 16:17:56,349 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-06-27 16:17:56,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-06-27 16:17:56,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 16:17:56,354 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-06-27 16:17:56,354 INFO L264 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} [2024-06-27 16:17:56,354 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-06-27 16:17:56,354 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-06-27 16:17:56,355 INFO L496 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) [2024-06-27 16:17:56,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:56,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:56,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:17:56,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:56,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:56,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-06-27 16:17:56,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:56,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119136001] [2024-06-27 16:17:56,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:56,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:56,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119136001] [2024-06-27 16:17:56,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119136001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:17:56,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:17:56,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:17:56,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651821243] [2024-06-27 16:17:56,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:17:56,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:17:56,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:17:56,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:17:56,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:56,518 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) [2024-06-27 16:17:56,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:56,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:56,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:56,711 INFO L124 PetriNetUnfolderBase]: 337/617 cut-off events. [2024-06-27 16:17:56,712 INFO L125 PetriNetUnfolderBase]: For 1712/1724 co-relation queries the response was YES. [2024-06-27 16:17:56,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 617 events. 337/617 cut-off events. For 1712/1724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2588 event pairs, 68 based on Foata normal form. 30/646 useless extension candidates. Maximal degree in co-relation 1916. Up to 237 conditions per place. [2024-06-27 16:17:56,715 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2024-06-27 16:17:56,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2024-06-27 16:17:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:17:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:17:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 16:17:56,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-06-27 16:17:56,717 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2024-06-27 16:17:56,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2024-06-27 16:17:56,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 16:17:56,723 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2024-06-27 16:17:56,723 INFO L264 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=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2024-06-27 16:17:56,723 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2024-06-27 16:17:56,724 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2024-06-27 16:17:56,724 INFO L496 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) [2024-06-27 16:17:56,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:56,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:56,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:17:56,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:56,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-06-27 16:17:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116143836] [2024-06-27 16:17:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:56,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:56,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116143836] [2024-06-27 16:17:56,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116143836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:17:56,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:17:56,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:17:56,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541004941] [2024-06-27 16:17:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:17:56,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:17:56,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:17:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:17:56,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:56,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 279 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) [2024-06-27 16:17:56,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:56,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:56,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:56,980 INFO L124 PetriNetUnfolderBase]: 508/929 cut-off events. [2024-06-27 16:17:56,980 INFO L125 PetriNetUnfolderBase]: For 3237/3255 co-relation queries the response was YES. [2024-06-27 16:17:56,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 929 events. 508/929 cut-off events. For 3237/3255 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4211 event pairs, 53 based on Foata normal form. 45/971 useless extension candidates. Maximal degree in co-relation 3046. Up to 253 conditions per place. [2024-06-27 16:17:56,985 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 20 changer transitions 23/103 dead transitions. [2024-06-27 16:17:56,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 771 flow [2024-06-27 16:17:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:17:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:17:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 16:17:56,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-06-27 16:17:56,986 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 141 transitions. [2024-06-27 16:17:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 771 flow [2024-06-27 16:17:56,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 705 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 16:17:56,991 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 376 flow [2024-06-27 16:17:56,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=376, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2024-06-27 16:17:56,992 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-06-27 16:17:56,992 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 376 flow [2024-06-27 16:17:56,993 INFO L496 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) [2024-06-27 16:17:56,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:56,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:17:56,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:56,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-06-27 16:17:56,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:56,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911234911] [2024-06-27 16:17:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:57,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:57,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:57,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911234911] [2024-06-27 16:17:57,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911234911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:17:57,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:17:57,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:17:57,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287638897] [2024-06-27 16:17:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:17:57,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 16:17:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:57,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 16:17:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 16:17:57,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:57,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 376 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) [2024-06-27 16:17:57,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:57,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:57,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:57,250 INFO L124 PetriNetUnfolderBase]: 481/884 cut-off events. [2024-06-27 16:17:57,250 INFO L125 PetriNetUnfolderBase]: For 5184/5202 co-relation queries the response was YES. [2024-06-27 16:17:57,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 884 events. 481/884 cut-off events. For 5184/5202 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4001 event pairs, 59 based on Foata normal form. 63/944 useless extension candidates. Maximal degree in co-relation 3352. Up to 154 conditions per place. [2024-06-27 16:17:57,255 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 25 changer transitions 33/106 dead transitions. [2024-06-27 16:17:57,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 964 flow [2024-06-27 16:17:57,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:17:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:17:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 16:17:57,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-27 16:17:57,257 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 376 flow. Second operand 11 states and 138 transitions. [2024-06-27 16:17:57,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 964 flow [2024-06-27 16:17:57,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 893 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 16:17:57,268 INFO L231 Difference]: Finished difference. Result has 73 places, 48 transitions, 475 flow [2024-06-27 16:17:57,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=475, PETRI_PLACES=73, PETRI_TRANSITIONS=48} [2024-06-27 16:17:57,270 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-06-27 16:17:57,271 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 48 transitions, 475 flow [2024-06-27 16:17:57,271 INFO L496 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) [2024-06-27 16:17:57,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:57,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:17:57,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:57,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-06-27 16:17:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513872729] [2024-06-27 16:17:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:57,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:57,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:57,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513872729] [2024-06-27 16:17:57,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513872729] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:17:57,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819180962] [2024-06-27 16:17:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:57,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:17:57,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:17:57,388 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) [2024-06-27 16:17:57,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 16:17:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:57,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:17:57,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:17:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:57,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:17:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819180962] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:17:57,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:17:57,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-06-27 16:17:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680578223] [2024-06-27 16:17:57,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:17:57,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 16:17:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 16:17:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 16:17:57,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:57,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 48 transitions, 475 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) [2024-06-27 16:17:57,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:57,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:57,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:58,065 INFO L124 PetriNetUnfolderBase]: 589/1094 cut-off events. [2024-06-27 16:17:58,065 INFO L125 PetriNetUnfolderBase]: For 10490/10508 co-relation queries the response was YES. [2024-06-27 16:17:58,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 1094 events. 589/1094 cut-off events. For 10490/10508 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4691 event pairs, 149 based on Foata normal form. 81/1174 useless extension candidates. Maximal degree in co-relation 4699. Up to 522 conditions per place. [2024-06-27 16:17:58,072 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 17 changer transitions 67/154 dead transitions. [2024-06-27 16:17:58,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1547 flow [2024-06-27 16:17:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 16:17:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 16:17:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-06-27 16:17:58,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 16:17:58,074 INFO L175 Difference]: Start difference. First operand has 73 places, 48 transitions, 475 flow. Second operand 19 states and 231 transitions. [2024-06-27 16:17:58,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1547 flow [2024-06-27 16:17:58,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 154 transitions, 1448 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 16:17:58,085 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 604 flow [2024-06-27 16:17:58,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=604, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2024-06-27 16:17:58,086 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2024-06-27 16:17:58,086 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 604 flow [2024-06-27 16:17:58,086 INFO L496 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) [2024-06-27 16:17:58,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:58,087 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:58,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 16:17:58,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:17:58,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:58,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash 410859599, now seen corresponding path program 2 times [2024-06-27 16:17:58,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:58,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149796953] [2024-06-27 16:17:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:58,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:58,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149796953] [2024-06-27 16:17:58,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149796953] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:17:58,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958881926] [2024-06-27 16:17:58,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:17:58,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:17:58,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:17:58,384 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) [2024-06-27 16:17:58,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 16:17:58,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:17:58,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:17:58,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 16:17:58,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:17:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:58,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:17:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:58,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958881926] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:17:58,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:17:58,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-06-27 16:17:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395938106] [2024-06-27 16:17:58,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:17:58,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 16:17:58,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:58,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 16:17:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 16:17:58,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:58,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 604 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) [2024-06-27 16:17:58,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:58,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:58,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:17:59,030 INFO L124 PetriNetUnfolderBase]: 877/1613 cut-off events. [2024-06-27 16:17:59,030 INFO L125 PetriNetUnfolderBase]: For 36575/36593 co-relation queries the response was YES. [2024-06-27 16:17:59,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9220 conditions, 1613 events. 877/1613 cut-off events. For 36575/36593 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7687 event pairs, 68 based on Foata normal form. 90/1702 useless extension candidates. Maximal degree in co-relation 9174. Up to 312 conditions per place. [2024-06-27 16:17:59,042 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 47 changer transitions 80/218 dead transitions. [2024-06-27 16:17:59,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 218 transitions, 2806 flow [2024-06-27 16:17:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-06-27 16:17:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-06-27 16:17:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-06-27 16:17:59,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-27 16:17:59,044 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 604 flow. Second operand 27 states and 334 transitions. [2024-06-27 16:17:59,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 218 transitions, 2806 flow [2024-06-27 16:17:59,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 218 transitions, 2262 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-06-27 16:17:59,067 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 1007 flow [2024-06-27 16:17:59,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1007, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2024-06-27 16:17:59,068 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2024-06-27 16:17:59,068 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 1007 flow [2024-06-27 16:17:59,068 INFO L496 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) [2024-06-27 16:17:59,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:17:59,068 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:17:59,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-06-27 16:17:59,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-06-27 16:17:59,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:17:59,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:17:59,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2010162528, now seen corresponding path program 1 times [2024-06-27 16:17:59,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:17:59,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026917562] [2024-06-27 16:17:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:17:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:59,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:17:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026917562] [2024-06-27 16:17:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026917562] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:17:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693703896] [2024-06-27 16:17:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:17:59,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:17:59,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:17:59,378 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) [2024-06-27 16:17:59,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 16:17:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:17:59,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 16:17:59,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:17:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:59,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:17:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:17:59,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693703896] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:17:59,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:17:59,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-06-27 16:17:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261257775] [2024-06-27 16:17:59,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:17:59,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:17:59,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:17:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:17:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:17:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:17:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 1007 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2024-06-27 16:17:59,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:17:59,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:17:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:00,103 INFO L124 PetriNetUnfolderBase]: 1111/2082 cut-off events. [2024-06-27 16:18:00,103 INFO L125 PetriNetUnfolderBase]: For 86453/86459 co-relation queries the response was YES. [2024-06-27 16:18:00,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14592 conditions, 2082 events. 1111/2082 cut-off events. For 86453/86459 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10786 event pairs, 153 based on Foata normal form. 69/2148 useless extension candidates. Maximal degree in co-relation 14534. Up to 490 conditions per place. [2024-06-27 16:18:00,121 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 51 changer transitions 67/220 dead transitions. [2024-06-27 16:18:00,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 3619 flow [2024-06-27 16:18:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-06-27 16:18:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-06-27 16:18:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-06-27 16:18:00,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-06-27 16:18:00,123 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 1007 flow. Second operand 25 states and 309 transitions. [2024-06-27 16:18:00,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 3619 flow [2024-06-27 16:18:00,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 220 transitions, 3039 flow, removed 274 selfloop flow, removed 15 redundant places. [2024-06-27 16:18:00,185 INFO L231 Difference]: Finished difference. Result has 135 places, 81 transitions, 1293 flow [2024-06-27 16:18:00,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1293, PETRI_PLACES=135, PETRI_TRANSITIONS=81} [2024-06-27 16:18:00,186 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2024-06-27 16:18:00,186 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 81 transitions, 1293 flow [2024-06-27 16:18:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2024-06-27 16:18:00,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:00,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:00,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:00,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:00,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:00,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:00,398 INFO L85 PathProgramCache]: Analyzing trace with hash 427004722, now seen corresponding path program 2 times [2024-06-27 16:18:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:00,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396955703] [2024-06-27 16:18:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396955703] [2024-06-27 16:18:00,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396955703] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:00,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941618862] [2024-06-27 16:18:00,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:18:00,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:00,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:00,472 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) [2024-06-27 16:18:00,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 16:18:00,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:18:00,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:00,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 16:18:00,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:00,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941618862] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:00,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:00,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-06-27 16:18:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030880124] [2024-06-27 16:18:00,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:18:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:18:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:18:00,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:00,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 81 transitions, 1293 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-06-27 16:18:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:00,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:01,300 INFO L124 PetriNetUnfolderBase]: 1192/2266 cut-off events. [2024-06-27 16:18:01,300 INFO L125 PetriNetUnfolderBase]: For 130343/130349 co-relation queries the response was YES. [2024-06-27 16:18:01,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16874 conditions, 2266 events. 1192/2266 cut-off events. For 130343/130349 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11883 event pairs, 38 based on Foata normal form. 132/2397 useless extension candidates. Maximal degree in co-relation 16809. Up to 480 conditions per place. [2024-06-27 16:18:01,321 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 76 changer transitions 93/261 dead transitions. [2024-06-27 16:18:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 261 transitions, 4879 flow [2024-06-27 16:18:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-27 16:18:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-27 16:18:01,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 345 transitions. [2024-06-27 16:18:01,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-06-27 16:18:01,323 INFO L175 Difference]: Start difference. First operand has 135 places, 81 transitions, 1293 flow. Second operand 28 states and 345 transitions. [2024-06-27 16:18:01,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 261 transitions, 4879 flow [2024-06-27 16:18:01,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 261 transitions, 4140 flow, removed 336 selfloop flow, removed 18 redundant places. [2024-06-27 16:18:01,464 INFO L231 Difference]: Finished difference. Result has 154 places, 100 transitions, 1854 flow [2024-06-27 16:18:01,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1854, PETRI_PLACES=154, PETRI_TRANSITIONS=100} [2024-06-27 16:18:01,464 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2024-06-27 16:18:01,465 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 100 transitions, 1854 flow [2024-06-27 16:18:01,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 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) [2024-06-27 16:18:01,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:01,465 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:01,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-06-27 16:18:01,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:01,676 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:01,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:01,677 INFO L85 PathProgramCache]: Analyzing trace with hash 899107870, now seen corresponding path program 3 times [2024-06-27 16:18:01,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:01,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712443737] [2024-06-27 16:18:01,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:01,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:01,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712443737] [2024-06-27 16:18:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712443737] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:01,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001921563] [2024-06-27 16:18:01,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:18:01,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:01,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:01,798 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) [2024-06-27 16:18:01,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 16:18:01,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-06-27 16:18:01,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:01,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2024-06-27 16:18:01,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:01,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:02,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001921563] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:02,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:02,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-06-27 16:18:02,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342398097] [2024-06-27 16:18:02,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:02,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 16:18:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 16:18:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-06-27 16:18:02,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:02,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 100 transitions, 1854 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-06-27 16:18:02,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:02,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:02,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:02,987 INFO L124 PetriNetUnfolderBase]: 1426/2650 cut-off events. [2024-06-27 16:18:02,988 INFO L125 PetriNetUnfolderBase]: For 187471/187477 co-relation queries the response was YES. [2024-06-27 16:18:02,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21519 conditions, 2650 events. 1426/2650 cut-off events. For 187471/187477 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13546 event pairs, 40 based on Foata normal form. 60/2709 useless extension candidates. Maximal degree in co-relation 21446. Up to 558 conditions per place. [2024-06-27 16:18:03,012 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 98 changer transitions 91/306 dead transitions. [2024-06-27 16:18:03,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 306 transitions, 6134 flow [2024-06-27 16:18:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-06-27 16:18:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-06-27 16:18:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 417 transitions. [2024-06-27 16:18:03,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5110294117647058 [2024-06-27 16:18:03,015 INFO L175 Difference]: Start difference. First operand has 154 places, 100 transitions, 1854 flow. Second operand 34 states and 417 transitions. [2024-06-27 16:18:03,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 306 transitions, 6134 flow [2024-06-27 16:18:03,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 306 transitions, 5138 flow, removed 468 selfloop flow, removed 19 redundant places. [2024-06-27 16:18:03,232 INFO L231 Difference]: Finished difference. Result has 177 places, 122 transitions, 2420 flow [2024-06-27 16:18:03,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2420, PETRI_PLACES=177, PETRI_TRANSITIONS=122} [2024-06-27 16:18:03,233 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2024-06-27 16:18:03,233 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 122 transitions, 2420 flow [2024-06-27 16:18:03,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-06-27 16:18:03,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:03,234 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:03,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:03,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-06-27 16:18:03,446 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:03,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:03,446 INFO L85 PathProgramCache]: Analyzing trace with hash -133490771, now seen corresponding path program 4 times [2024-06-27 16:18:03,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:03,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931882866] [2024-06-27 16:18:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:03,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:03,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931882866] [2024-06-27 16:18:03,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931882866] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:03,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410441518] [2024-06-27 16:18:03,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:18:03,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:03,650 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) [2024-06-27 16:18:03,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 16:18:03,701 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:18:03,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:03,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:03,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:03,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410441518] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:03,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:03,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-06-27 16:18:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060735769] [2024-06-27 16:18:03,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:03,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:03,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:03,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 122 transitions, 2420 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:03,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:03,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:03,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:04,551 INFO L124 PetriNetUnfolderBase]: 1408/2676 cut-off events. [2024-06-27 16:18:04,552 INFO L125 PetriNetUnfolderBase]: For 207785/207791 co-relation queries the response was YES. [2024-06-27 16:18:04,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21194 conditions, 2676 events. 1408/2676 cut-off events. For 207785/207791 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14202 event pairs, 477 based on Foata normal form. 33/2706 useless extension candidates. Maximal degree in co-relation 21115. Up to 1645 conditions per place. [2024-06-27 16:18:04,581 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 134 selfloop transitions, 36 changer transitions 47/220 dead transitions. [2024-06-27 16:18:04,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 4638 flow [2024-06-27 16:18:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 16:18:04,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 16:18:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 225 transitions. [2024-06-27 16:18:04,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 16:18:04,583 INFO L175 Difference]: Start difference. First operand has 177 places, 122 transitions, 2420 flow. Second operand 19 states and 225 transitions. [2024-06-27 16:18:04,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 4638 flow [2024-06-27 16:18:04,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 220 transitions, 3635 flow, removed 462 selfloop flow, removed 25 redundant places. [2024-06-27 16:18:04,788 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 2061 flow [2024-06-27 16:18:04,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2061, PETRI_PLACES=169, PETRI_TRANSITIONS=126} [2024-06-27 16:18:04,789 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-06-27 16:18:04,789 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 2061 flow [2024-06-27 16:18:04,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:04,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:04,790 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:04,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:05,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:05,001 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:05,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash -450928797, now seen corresponding path program 5 times [2024-06-27 16:18:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783327578] [2024-06-27 16:18:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783327578] [2024-06-27 16:18:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783327578] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586211575] [2024-06-27 16:18:05,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:18:05,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:05,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:05,260 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) [2024-06-27 16:18:05,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 16:18:05,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-06-27 16:18:05,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:05,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:05,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:05,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586211575] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:05,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-06-27 16:18:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158831706] [2024-06-27 16:18:05,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:05,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:18:05,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:18:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:18:05,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:05,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 126 transitions, 2061 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:05,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:05,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:05,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:06,224 INFO L124 PetriNetUnfolderBase]: 1570/3051 cut-off events. [2024-06-27 16:18:06,224 INFO L125 PetriNetUnfolderBase]: For 162098/162104 co-relation queries the response was YES. [2024-06-27 16:18:06,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 3051 events. 1570/3051 cut-off events. For 162098/162104 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17075 event pairs, 396 based on Foata normal form. 33/3083 useless extension candidates. Maximal degree in co-relation 20772. Up to 1489 conditions per place. [2024-06-27 16:18:06,252 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 135 selfloop transitions, 62 changer transitions 53/253 dead transitions. [2024-06-27 16:18:06,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 253 transitions, 4428 flow [2024-06-27 16:18:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-27 16:18:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-27 16:18:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 261 transitions. [2024-06-27 16:18:06,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2024-06-27 16:18:06,254 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 2061 flow. Second operand 22 states and 261 transitions. [2024-06-27 16:18:06,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 253 transitions, 4428 flow [2024-06-27 16:18:06,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 4236 flow, removed 72 selfloop flow, removed 12 redundant places. [2024-06-27 16:18:06,444 INFO L231 Difference]: Finished difference. Result has 187 places, 145 transitions, 2612 flow [2024-06-27 16:18:06,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2612, PETRI_PLACES=187, PETRI_TRANSITIONS=145} [2024-06-27 16:18:06,445 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 161 predicate places. [2024-06-27 16:18:06,445 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 145 transitions, 2612 flow [2024-06-27 16:18:06,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:06,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:06,446 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:06,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:06,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:06,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:06,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:06,658 INFO L85 PathProgramCache]: Analyzing trace with hash -584449067, now seen corresponding path program 6 times [2024-06-27 16:18:06,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:06,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242457603] [2024-06-27 16:18:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242457603] [2024-06-27 16:18:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242457603] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747880198] [2024-06-27 16:18:06,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:18:06,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:06,860 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) [2024-06-27 16:18:06,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 16:18:06,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-06-27 16:18:06,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:06,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:06,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:06,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:07,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747880198] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:07,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:07,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-06-27 16:18:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487996645] [2024-06-27 16:18:07,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:07,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:07,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:07,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:07,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:07,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 145 transitions, 2612 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:07,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:07,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:07,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:07,701 INFO L124 PetriNetUnfolderBase]: 1624/3177 cut-off events. [2024-06-27 16:18:07,701 INFO L125 PetriNetUnfolderBase]: For 188940/188946 co-relation queries the response was YES. [2024-06-27 16:18:07,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22672 conditions, 3177 events. 1624/3177 cut-off events. For 188940/188946 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17978 event pairs, 327 based on Foata normal form. 33/3207 useless extension candidates. Maximal degree in co-relation 22593. Up to 1171 conditions per place. [2024-06-27 16:18:07,730 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 83 changer transitions 51/256 dead transitions. [2024-06-27 16:18:07,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 256 transitions, 4862 flow [2024-06-27 16:18:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-27 16:18:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-27 16:18:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 250 transitions. [2024-06-27 16:18:07,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-06-27 16:18:07,732 INFO L175 Difference]: Start difference. First operand has 187 places, 145 transitions, 2612 flow. Second operand 21 states and 250 transitions. [2024-06-27 16:18:07,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 256 transitions, 4862 flow [2024-06-27 16:18:08,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 256 transitions, 4584 flow, removed 117 selfloop flow, removed 11 redundant places. [2024-06-27 16:18:08,067 INFO L231 Difference]: Finished difference. Result has 200 places, 151 transitions, 2856 flow [2024-06-27 16:18:08,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2856, PETRI_PLACES=200, PETRI_TRANSITIONS=151} [2024-06-27 16:18:08,068 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2024-06-27 16:18:08,068 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 151 transitions, 2856 flow [2024-06-27 16:18:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:08,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:08,069 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:08,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-06-27 16:18:08,280 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:08,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:08,281 INFO L85 PathProgramCache]: Analyzing trace with hash -176872313, now seen corresponding path program 7 times [2024-06-27 16:18:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387118152] [2024-06-27 16:18:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:08,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:08,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387118152] [2024-06-27 16:18:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387118152] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394282896] [2024-06-27 16:18:08,472 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:18:08,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:08,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:08,473 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) [2024-06-27 16:18:08,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 16:18:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:08,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:08,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:08,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:08,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394282896] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:08,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-06-27 16:18:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649338093] [2024-06-27 16:18:08,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:18:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:18:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:18:08,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:08,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 151 transitions, 2856 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:08,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:08,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:08,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:09,529 INFO L124 PetriNetUnfolderBase]: 1750/3465 cut-off events. [2024-06-27 16:18:09,529 INFO L125 PetriNetUnfolderBase]: For 215015/215021 co-relation queries the response was YES. [2024-06-27 16:18:09,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25184 conditions, 3465 events. 1750/3465 cut-off events. For 215015/215021 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 20383 event pairs, 258 based on Foata normal form. 33/3497 useless extension candidates. Maximal degree in co-relation 25101. Up to 1033 conditions per place. [2024-06-27 16:18:09,560 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 122 selfloop transitions, 104 changer transitions 57/286 dead transitions. [2024-06-27 16:18:09,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 286 transitions, 5504 flow [2024-06-27 16:18:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-06-27 16:18:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-06-27 16:18:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 287 transitions. [2024-06-27 16:18:09,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982638888888889 [2024-06-27 16:18:09,562 INFO L175 Difference]: Start difference. First operand has 200 places, 151 transitions, 2856 flow. Second operand 24 states and 287 transitions. [2024-06-27 16:18:09,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 286 transitions, 5504 flow [2024-06-27 16:18:09,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 286 transitions, 5144 flow, removed 138 selfloop flow, removed 13 redundant places. [2024-06-27 16:18:09,870 INFO L231 Difference]: Finished difference. Result has 217 places, 166 transitions, 3409 flow [2024-06-27 16:18:09,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3409, PETRI_PLACES=217, PETRI_TRANSITIONS=166} [2024-06-27 16:18:09,871 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-06-27 16:18:09,871 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 166 transitions, 3409 flow [2024-06-27 16:18:09,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:09,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:09,871 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:09,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:10,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-06-27 16:18:10,082 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:10,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash 552481663, now seen corresponding path program 8 times [2024-06-27 16:18:10,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:10,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231530409] [2024-06-27 16:18:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:10,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:10,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231530409] [2024-06-27 16:18:10,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231530409] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523132564] [2024-06-27 16:18:10,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:18:10,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:10,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:10,224 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) [2024-06-27 16:18:10,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-27 16:18:10,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:18:10,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:10,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:10,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:10,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:10,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523132564] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:10,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:10,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-06-27 16:18:10,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328047737] [2024-06-27 16:18:10,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:10,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:10,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:10,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:10,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 166 transitions, 3409 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:10,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:10,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:10,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:11,258 INFO L124 PetriNetUnfolderBase]: 1840/3672 cut-off events. [2024-06-27 16:18:11,259 INFO L125 PetriNetUnfolderBase]: For 231043/231049 co-relation queries the response was YES. [2024-06-27 16:18:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27065 conditions, 3672 events. 1840/3672 cut-off events. For 231043/231049 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22147 event pairs, 237 based on Foata normal form. 33/3702 useless extension candidates. Maximal degree in co-relation 26975. Up to 859 conditions per place. [2024-06-27 16:18:11,286 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 115 selfloop transitions, 121 changer transitions 55/294 dead transitions. [2024-06-27 16:18:11,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 294 transitions, 6067 flow [2024-06-27 16:18:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-06-27 16:18:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-06-27 16:18:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 276 transitions. [2024-06-27 16:18:11,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 16:18:11,288 INFO L175 Difference]: Start difference. First operand has 217 places, 166 transitions, 3409 flow. Second operand 23 states and 276 transitions. [2024-06-27 16:18:11,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 294 transitions, 6067 flow [2024-06-27 16:18:11,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 294 transitions, 5693 flow, removed 132 selfloop flow, removed 16 redundant places. [2024-06-27 16:18:11,711 INFO L231 Difference]: Finished difference. Result has 229 places, 177 transitions, 3875 flow [2024-06-27 16:18:11,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3875, PETRI_PLACES=229, PETRI_TRANSITIONS=177} [2024-06-27 16:18:11,712 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 203 predicate places. [2024-06-27 16:18:11,712 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 177 transitions, 3875 flow [2024-06-27 16:18:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:11,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:11,713 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:11,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:11,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-27 16:18:11,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:11,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1272202843, now seen corresponding path program 9 times [2024-06-27 16:18:11,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:11,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070756013] [2024-06-27 16:18:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:12,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:12,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070756013] [2024-06-27 16:18:12,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070756013] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:12,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040793143] [2024-06-27 16:18:12,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 16:18:12,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:12,194 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) [2024-06-27 16:18:12,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-27 16:18:12,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-06-27 16:18:12,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:12,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:12,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:12,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:12,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040793143] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:12,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:12,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-06-27 16:18:12,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728263249] [2024-06-27 16:18:12,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:18:12,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:18:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:18:12,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:12,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 177 transitions, 3875 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:12,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:12,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:12,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:13,424 INFO L124 PetriNetUnfolderBase]: 1930/3876 cut-off events. [2024-06-27 16:18:13,424 INFO L125 PetriNetUnfolderBase]: For 261665/261671 co-relation queries the response was YES. [2024-06-27 16:18:13,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 3876 events. 1930/3876 cut-off events. For 261665/261671 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 23878 event pairs, 174 based on Foata normal form. 33/3908 useless extension candidates. Maximal degree in co-relation 29258. Up to 888 conditions per place. [2024-06-27 16:18:13,468 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 118 selfloop transitions, 138 changer transitions 61/320 dead transitions. [2024-06-27 16:18:13,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 320 transitions, 6735 flow [2024-06-27 16:18:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-06-27 16:18:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-06-27 16:18:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 313 transitions. [2024-06-27 16:18:13,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016025641025641 [2024-06-27 16:18:13,472 INFO L175 Difference]: Start difference. First operand has 229 places, 177 transitions, 3875 flow. Second operand 26 states and 313 transitions. [2024-06-27 16:18:13,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 320 transitions, 6735 flow [2024-06-27 16:18:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 320 transitions, 6261 flow, removed 168 selfloop flow, removed 16 redundant places. [2024-06-27 16:18:13,960 INFO L231 Difference]: Finished difference. Result has 243 places, 188 transitions, 4314 flow [2024-06-27 16:18:13,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4314, PETRI_PLACES=243, PETRI_TRANSITIONS=188} [2024-06-27 16:18:13,961 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 217 predicate places. [2024-06-27 16:18:13,961 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 188 transitions, 4314 flow [2024-06-27 16:18:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:13,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:13,962 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:13,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:14,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-06-27 16:18:14,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:14,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -531512277, now seen corresponding path program 10 times [2024-06-27 16:18:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429008679] [2024-06-27 16:18:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429008679] [2024-06-27 16:18:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429008679] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402827129] [2024-06-27 16:18:14,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 16:18:14,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:14,311 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) [2024-06-27 16:18:14,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-06-27 16:18:14,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 16:18:14,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:14,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:14,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:14,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402827129] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:14,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:14,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-06-27 16:18:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449164866] [2024-06-27 16:18:14,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:14,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:14,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 188 transitions, 4314 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:14,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:14,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:14,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:15,434 INFO L124 PetriNetUnfolderBase]: 2002/4038 cut-off events. [2024-06-27 16:18:15,434 INFO L125 PetriNetUnfolderBase]: For 283050/283056 co-relation queries the response was YES. [2024-06-27 16:18:15,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31107 conditions, 4038 events. 2002/4038 cut-off events. For 283050/283056 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25220 event pairs, 153 based on Foata normal form. 33/4068 useless extension candidates. Maximal degree in co-relation 31006. Up to 924 conditions per place. [2024-06-27 16:18:15,473 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 150 changer transitions 59/326 dead transitions. [2024-06-27 16:18:15,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 326 transitions, 7218 flow [2024-06-27 16:18:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-06-27 16:18:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-06-27 16:18:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 302 transitions. [2024-06-27 16:18:15,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-06-27 16:18:15,474 INFO L175 Difference]: Start difference. First operand has 243 places, 188 transitions, 4314 flow. Second operand 25 states and 302 transitions. [2024-06-27 16:18:15,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 326 transitions, 7218 flow [2024-06-27 16:18:15,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 326 transitions, 6694 flow, removed 173 selfloop flow, removed 20 redundant places. [2024-06-27 16:18:15,956 INFO L231 Difference]: Finished difference. Result has 251 places, 197 transitions, 4663 flow [2024-06-27 16:18:15,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4663, PETRI_PLACES=251, PETRI_TRANSITIONS=197} [2024-06-27 16:18:15,956 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 225 predicate places. [2024-06-27 16:18:15,956 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 197 transitions, 4663 flow [2024-06-27 16:18:15,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:15,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:15,957 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:15,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-06-27 16:18:16,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-06-27 16:18:16,167 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:16,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1865814495, now seen corresponding path program 11 times [2024-06-27 16:18:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:16,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267281256] [2024-06-27 16:18:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:16,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267281256] [2024-06-27 16:18:16,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267281256] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:16,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596026478] [2024-06-27 16:18:16,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 16:18:16,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:16,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:16,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:16,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-06-27 16:18:16,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-06-27 16:18:16,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:16,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:16,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:16,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596026478] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:16,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:16,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-06-27 16:18:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940551376] [2024-06-27 16:18:16,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:16,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:18:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:16,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:18:16,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:18:16,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:16,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 197 transitions, 4663 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:16,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:16,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:16,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:17,765 INFO L124 PetriNetUnfolderBase]: 2101/4245 cut-off events. [2024-06-27 16:18:17,766 INFO L125 PetriNetUnfolderBase]: For 305493/305499 co-relation queries the response was YES. [2024-06-27 16:18:17,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32941 conditions, 4245 events. 2101/4245 cut-off events. For 305493/305499 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26719 event pairs, 84 based on Foata normal form. 33/4277 useless extension candidates. Maximal degree in co-relation 32836. Up to 966 conditions per place. [2024-06-27 16:18:17,813 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 166 changer transitions 63/351 dead transitions. [2024-06-27 16:18:17,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 351 transitions, 7718 flow [2024-06-27 16:18:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-27 16:18:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-27 16:18:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 339 transitions. [2024-06-27 16:18:17,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-06-27 16:18:17,815 INFO L175 Difference]: Start difference. First operand has 251 places, 197 transitions, 4663 flow. Second operand 28 states and 339 transitions. [2024-06-27 16:18:17,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 351 transitions, 7718 flow [2024-06-27 16:18:18,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 351 transitions, 7156 flow, removed 174 selfloop flow, removed 20 redundant places. [2024-06-27 16:18:18,548 INFO L231 Difference]: Finished difference. Result has 262 places, 207 transitions, 4989 flow [2024-06-27 16:18:18,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4989, PETRI_PLACES=262, PETRI_TRANSITIONS=207} [2024-06-27 16:18:18,549 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 236 predicate places. [2024-06-27 16:18:18,549 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 207 transitions, 4989 flow [2024-06-27 16:18:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2024-06-27 16:18:18,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:18,562 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:18,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-06-27 16:18:18,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:18,773 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:18,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:18,775 INFO L85 PathProgramCache]: Analyzing trace with hash 334855933, now seen corresponding path program 12 times [2024-06-27 16:18:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916590616] [2024-06-27 16:18:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:18,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916590616] [2024-06-27 16:18:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916590616] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711584376] [2024-06-27 16:18:18,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 16:18:18,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:18,962 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:18,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-06-27 16:18:19,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-06-27 16:18:19,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:19,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:19,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:19,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:19,122 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711584376] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:19,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:19,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-06-27 16:18:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141709294] [2024-06-27 16:18:19,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 16:18:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 16:18:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-06-27 16:18:19,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:19,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 207 transitions, 4989 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:19,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:19,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:19,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:20,202 INFO L124 PetriNetUnfolderBase]: 2272/4566 cut-off events. [2024-06-27 16:18:20,202 INFO L125 PetriNetUnfolderBase]: For 350106/350112 co-relation queries the response was YES. [2024-06-27 16:18:20,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36520 conditions, 4566 events. 2272/4566 cut-off events. For 350106/350112 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28964 event pairs, 81 based on Foata normal form. 33/4596 useless extension candidates. Maximal degree in co-relation 36411. Up to 1032 conditions per place. [2024-06-27 16:18:20,246 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 128 selfloop transitions, 174 changer transitions 55/360 dead transitions. [2024-06-27 16:18:20,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 360 transitions, 8295 flow [2024-06-27 16:18:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-06-27 16:18:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-06-27 16:18:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 332 transitions. [2024-06-27 16:18:20,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-27 16:18:20,248 INFO L175 Difference]: Start difference. First operand has 262 places, 207 transitions, 4989 flow. Second operand 27 states and 332 transitions. [2024-06-27 16:18:20,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 360 transitions, 8295 flow [2024-06-27 16:18:21,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 360 transitions, 7718 flow, removed 189 selfloop flow, removed 21 redundant places. [2024-06-27 16:18:21,013 INFO L231 Difference]: Finished difference. Result has 271 places, 215 transitions, 5398 flow [2024-06-27 16:18:21,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5398, PETRI_PLACES=271, PETRI_TRANSITIONS=215} [2024-06-27 16:18:21,014 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-06-27 16:18:21,014 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 215 transitions, 5398 flow [2024-06-27 16:18:21,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-06-27 16:18:21,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:21,015 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:21,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:21,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:21,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:21,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 400366853, now seen corresponding path program 13 times [2024-06-27 16:18:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781394382] [2024-06-27 16:18:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781394382] [2024-06-27 16:18:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781394382] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096118052] [2024-06-27 16:18:21,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 16:18:21,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:21,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:21,522 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:21,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-06-27 16:18:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:21,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2024-06-27 16:18:21,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:21,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 16:18:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096118052] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 16:18:21,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 16:18:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-06-27 16:18:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028709941] [2024-06-27 16:18:21,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 16:18:21,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-27 16:18:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-27 16:18:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-06-27 16:18:21,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-06-27 16:18:21,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 215 transitions, 5398 flow. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 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) [2024-06-27 16:18:21,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:21,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-06-27 16:18:21,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:22,895 INFO L124 PetriNetUnfolderBase]: 2218/4482 cut-off events. [2024-06-27 16:18:22,895 INFO L125 PetriNetUnfolderBase]: For 364456/364462 co-relation queries the response was YES. [2024-06-27 16:18:22,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36415 conditions, 4482 events. 2218/4482 cut-off events. For 364456/364462 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28459 event pairs, 78 based on Foata normal form. 51/4532 useless extension candidates. Maximal degree in co-relation 36301. Up to 1008 conditions per place. [2024-06-27 16:18:22,936 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 177 changer transitions 67/366 dead transitions. [2024-06-27 16:18:22,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 366 transitions, 8612 flow [2024-06-27 16:18:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-27 16:18:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-27 16:18:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2024-06-27 16:18:22,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2024-06-27 16:18:22,937 INFO L175 Difference]: Start difference. First operand has 271 places, 215 transitions, 5398 flow. Second operand 28 states and 341 transitions. [2024-06-27 16:18:22,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 366 transitions, 8612 flow [2024-06-27 16:18:23,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 366 transitions, 7860 flow, removed 244 selfloop flow, removed 22 redundant places. [2024-06-27 16:18:23,653 INFO L231 Difference]: Finished difference. Result has 278 places, 217 transitions, 5432 flow [2024-06-27 16:18:23,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5432, PETRI_PLACES=278, PETRI_TRANSITIONS=217} [2024-06-27 16:18:23,654 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2024-06-27 16:18:23,654 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 217 transitions, 5432 flow [2024-06-27 16:18:23,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 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) [2024-06-27 16:18:23,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:23,654 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:23,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:23,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:23,865 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-27 16:18:23,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -107109742, now seen corresponding path program 14 times [2024-06-27 16:18:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:23,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942549690] [2024-06-27 16:18:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:18:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942549690] [2024-06-27 16:18:23,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942549690] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 16:18:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407260835] [2024-06-27 16:18:23,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 16:18:23,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 16:18:23,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:23,931 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 16:18:23,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-06-27 16:18:24,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 16:18:24,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 16:18:24,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-27 16:18:24,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 16:18:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 16:18:24,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 16:18:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407260835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 16:18:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-06-27 16:18:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586342326] [2024-06-27 16:18:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:24,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 16:18:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 16:18:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 16:18:24,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-06-27 16:18:24,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 217 transitions, 5432 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-27 16:18:24,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:24,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-06-27 16:18:24,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:25,276 INFO L124 PetriNetUnfolderBase]: 3094/6666 cut-off events. [2024-06-27 16:18:25,276 INFO L125 PetriNetUnfolderBase]: For 365611/366677 co-relation queries the response was YES. [2024-06-27 16:18:25,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39935 conditions, 6666 events. 3094/6666 cut-off events. For 365611/366677 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 53441 event pairs, 171 based on Foata normal form. 266/6320 useless extension candidates. Maximal degree in co-relation 39827. Up to 1324 conditions per place. [2024-06-27 16:18:25,347 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 235/235 dead transitions. [2024-06-27 16:18:25,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 235 transitions, 4711 flow [2024-06-27 16:18:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 16:18:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 16:18:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 16:18:25,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-06-27 16:18:25,363 INFO L175 Difference]: Start difference. First operand has 278 places, 217 transitions, 5432 flow. Second operand 8 states and 142 transitions. [2024-06-27 16:18:25,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 235 transitions, 4711 flow [2024-06-27 16:18:26,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 235 transitions, 3973 flow, removed 181 selfloop flow, removed 32 redundant places. [2024-06-27 16:18:26,017 INFO L231 Difference]: Finished difference. Result has 247 places, 0 transitions, 0 flow [2024-06-27 16:18:26,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=247, PETRI_TRANSITIONS=0} [2024-06-27 16:18:26,018 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 221 predicate places. [2024-06-27 16:18:26,018 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 0 transitions, 0 flow [2024-06-27 16:18:26,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2024-06-27 16:18:26,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-06-27 16:18:26,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-06-27 16:18:26,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-06-27 16:18:26,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-06-27 16:18:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-06-27 16:18:26,232 INFO L445 BasicCegarLoop]: Path program histogram: [14, 3, 2, 2, 1] [2024-06-27 16:18:26,236 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:18:26,236 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:18:26,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:18:26 BasicIcfg [2024-06-27 16:18:26,242 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:18:26,242 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:18:26,242 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:18:26,242 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:18:26,243 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:17:54" (3/4) ... [2024-06-27 16:18:26,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:18:26,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-06-27 16:18:26,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-06-27 16:18:26,252 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-06-27 16:18:26,252 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-06-27 16:18:26,252 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-06-27 16:18:26,252 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-06-27 16:18:26,357 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:18:26,357 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:18:26,357 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:18:26,358 INFO L158 Benchmark]: Toolchain (without parser) took 32395.29ms. Allocated memory was 159.4MB in the beginning and 4.7GB in the end (delta: 4.6GB). Free memory was 85.3MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 682.6MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,358 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:18:26,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.90ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 85.1MB in the beginning and 167.1MB in the end (delta: -82.0MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,359 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.34ms. Allocated memory is still 203.4MB. Free memory was 167.1MB in the beginning and 164.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,359 INFO L158 Benchmark]: Boogie Preprocessor took 49.92ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 162.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,359 INFO L158 Benchmark]: RCFGBuilder took 328.02ms. Allocated memory is still 203.4MB. Free memory was 162.9MB in the beginning and 144.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,360 INFO L158 Benchmark]: TraceAbstraction took 31457.28ms. Allocated memory was 203.4MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 144.0MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 917.9MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,372 INFO L158 Benchmark]: Witness Printer took 115.06ms. Allocated memory is still 4.7GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:18:26,376 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.90ms. Allocated memory was 159.4MB in the beginning and 203.4MB in the end (delta: 44.0MB). Free memory was 85.1MB in the beginning and 167.1MB in the end (delta: -82.0MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.34ms. Allocated memory is still 203.4MB. Free memory was 167.1MB in the beginning and 164.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.92ms. Allocated memory is still 203.4MB. Free memory was 164.9MB in the beginning and 162.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.02ms. Allocated memory is still 203.4MB. Free memory was 162.9MB in the beginning and 144.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 31457.28ms. Allocated memory was 203.4MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 144.0MB in the beginning and 4.0GB in the end (delta: -3.8GB). Peak memory consumption was 917.9MB. Max. memory is 16.1GB. * Witness Printer took 115.06ms. Allocated memory is still 4.7GB. Free memory was 4.0GB in the beginning and 4.0GB 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: 31.4s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4919 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4888 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 233 mSDsCounter, 323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6764 IncrementalHoareTripleChecker+Invalid, 7087 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 323 mSolverCounterUnsat, 7 mSDtfsCounter, 6764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1553 GetRequests, 944 SyntacticMatches, 53 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4111 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5432occurred in iteration=21, InterpolantAutomatonStates: 440, 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, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 1164 NumberOfCodeBlocks, 1162 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 1612 ConstructedInterpolants, 0 QuantifiedInterpolants, 6857 SizeOfPredicates, 137 NumberOfNonLiveVariables, 1846 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 53 InterpolantComputations, 7 PerfectInterpolantSequences, 119/1818 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! [2024-06-27 16:18:26,395 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